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145341205251 = 31123191490389
BaseRepresentation
bin1000011101011100000…
…0101100101100000011
3111220011002010012220220
42013113000230230003
54340124322032001
6150434022234123
713333455601164
oct2072700545403
9456132105826
10145341205251
1156703359760
1224202585943
1310923317988
14706ab4b76b
153ba9ac5c36
hex21d702cb03

145341205251 has 16 divisors (see below), whose sum is σ = 220596929280. Its totient is φ = 84255770720.

The previous prime is 145341205241. The next prime is 145341205267. The reversal of 145341205251 is 152502143541.

It is not a de Polignac number, because 145341205251 - 26 = 145341205187 is a prime.

It is a super-2 number, since 2×1453412052512 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (145341205241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95744436 + ... + 95745953.

It is an arithmetic number, because the mean of its divisors is an integer number (13787308080).

Almost surely, 2145341205251 is an apocalyptic number.

145341205251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145341205251 is a deficient number, since it is larger than the sum of its proper divisors (75255724029).

145341205251 is a wasteful number, since it uses less digits than its factorization.

145341205251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191490426.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 145341205251 its reverse (152502143541), we get a palindrome (297843348792).

The spelling of 145341205251 in words is "one hundred forty-five billion, three hundred forty-one million, two hundred five thousand, two hundred fifty-one".

Divisors: 1 3 11 23 33 69 253 759 191490389 574471167 2106394279 4404278947 6319182837 13212836841 48447068417 145341205251