145051523631 has 40 divisors (see below), whose sum is σ = 248443395200. Its totient is φ = 82616496912.

The previous prime is 145051523627. The next prime is 145051523647. The reversal of 145051523631 is 136325150541.

145051523631 is a `hidden beast` number, since 1 + 4 + 5 + 0 + 5 + 15 + 2 + 3 + 631 = 666.

It is not a de Polignac number, because 145051523631 - 2² = 145051523627 is a prime.

It is a super-2 number, since 2×145051523631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145051523531) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 242581 + ... + 590718.

It is an arithmetic number, because the mean of its divisors is an integer number (6211084880).

Almost surely, 2^145051523631 is an apocalyptic number.

145051523631 is a deficient number, since it is larger than the sum of its proper divisors (103391871569).

145051523631 is an equidigital number, since it uses as much as digits as its factorization.

145051523631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833625 (or 833616 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 145051523631 in words is "one hundred forty-five billion, fifty-one million, five hundred twenty-three thousand, six hundred thirty-one".