20235162645 has 72 divisors (see below), whose sum is σ = 37523278728. Its totient is φ = 10052812800.

The previous prime is 20235162637. The next prime is 20235162677. The reversal of 20235162645 is 54626153202.

20235162645 is a `hidden beast` number, since 2 + 0 + 2 + 3 + 5 + 1 + 6 + 2 + 645 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 2032026084 + 18203136561 = 45078^2 + 134919^2 .

It is not a de Polignac number, because 20235162645 - 2³ = 20235162637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7802469 + ... + 7805061.

It is an arithmetic number, because the mean of its divisors is an integer number (521156649).

Almost surely, 2^20235162645 is an apocalyptic number.

It is an amenable number.

20235162645 is a deficient number, since it is larger than the sum of its proper divisors (17288116083).

20235162645 is a wasteful number, since it uses less digits than its factorization.

20235162645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2823 (or 2719 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 20235162645 in words is "twenty billion, two hundred thirty-five million, one hundred sixty-two thousand, six hundred forty-five".