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145121250211 = 797213727909
BaseRepresentation
bin1000011100100111100…
…1101000101110100011
3111212120202020100022221
42013021321220232203
54334202020001321
6150400124011511
713325145162640
oct2071171505643
9455522210287
10145121250211
1156600187233
1224160990b97
13108b9894872
147049852dc7
153b95628e41
hex21c9e68ba3

145121250211 has 8 divisors (see below), whose sum is σ = 167562681440. Its totient is φ = 123107275008.

The previous prime is 145121250191. The next prime is 145121250217. The reversal of 145121250211 is 112052121541.

145121250211 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 a cyclic number.

It is not a de Polignac number, because 145121250211 - 27 = 145121250083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145121250217) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 106863276 + ... + 106864633.

It is an arithmetic number, because the mean of its divisors is an integer number (20945335180).

Almost surely, 2145121250211 is an apocalyptic number.

145121250211 is a deficient number, since it is larger than the sum of its proper divisors (22441431229).

145121250211 is an equidigital number, since it uses as much as digits as its factorization.

145121250211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213728013.

The product of its (nonzero) digits is 800, while the sum is 25.

Adding to 145121250211 its reverse (112052121541), we get a palindrome (257173371752).

The spelling of 145121250211 in words is "one hundred forty-five billion, one hundred twenty-one million, two hundred fifty thousand, two hundred eleven".

Divisors: 1 7 97 679 213727909 1496095363 20731607173 145121250211