20031645352 has 32 divisors (see below), whose sum is σ = 37802721600. Its totient is φ = 9951120000.

The previous prime is 20031645341. The next prime is 20031645383. The reversal of 20031645352 is 25354613002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809077 + ... + 833467.

It is an arithmetic number, because the mean of its divisors is an integer number (1181335050).

Almost surely, 2^20031645352 is an apocalyptic number.

It is an amenable number.

20031645352 is a deficient number, since it is larger than the sum of its proper divisors (17771076248).

20031645352 is a wasteful number, since it uses less digits than its factorization.

20031645352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25057 (or 25053 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 20031645352 in words is "twenty billion, thirty-one million, six hundred forty-five thousand, three hundred fifty-two".