145902995553 has 32 divisors (see below), whose sum is σ = 224087535360. Its totient is φ = 82714199040.

The previous prime is 145902995549. The next prime is 145902995573. The reversal of 145902995553 is 355599209541.

It is not a de Polignac number, because 145902995553 - 2² = 145902995549 is a prime.

It is a super-2 number, since 2×145902995553² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 145902995493 and 145902995502.

It is not an unprimeable number, because it can be changed into a prime (145902995503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4994293 + ... + 5023421.

It is an arithmetic number, because the mean of its divisors is an integer number (7002735480).

Almost surely, 2^145902995553 is an apocalyptic number.

It is an amenable number.

145902995553 is a deficient number, since it is larger than the sum of its proper divisors (78184539807).

145902995553 is a wasteful number, since it uses less digits than its factorization.

145902995553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31017.

The product of its (nonzero) digits is 10935000, while the sum is 57.

The spelling of 145902995553 in words is "one hundred forty-five billion, nine hundred two million, nine hundred ninety-five thousand, five hundred fifty-three".