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145471305986 = 2144750266519
BaseRepresentation
bin1000011101111011000…
…0111111100100000010
3111220111010221000120122
42013132300333210002
54340411123242421
6150454550540242
713336625461466
oct2073660774402
9456433830518
10145471305986
115676a83a326
122423a067682
131094426a266
1470801364a6
153bb62242ab
hex21dec3f902

145471305986 has 8 divisors (see below), whose sum is σ = 218357762880. Its totient is φ = 72685385028.

The previous prime is 145471305979. The next prime is 145471305997. The reversal of 145471305986 is 689503174541.

145471305986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25130366 + ... + 25136153.

It is an arithmetic number, because the mean of its divisors is an integer number (27294720360).

Almost surely, 2145471305986 is an apocalyptic number.

145471305986 is a deficient number, since it is larger than the sum of its proper divisors (72886456894).

145471305986 is a wasteful number, since it uses less digits than its factorization.

145471305986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50267968.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 145471305986 in words is "one hundred forty-five billion, four hundred seventy-one million, three hundred five thousand, nine hundred eighty-six".

Divisors: 1 2 1447 2894 50266519 100533038 72735652993 145471305986