20372643232 has 12 divisors (see below), whose sum is σ = 40108641426. Its totient is φ = 10186321600.

The previous prime is 20372643197. The next prime is 20372643283. The reversal of 20372643232 is 23234627302.

It can be written as a sum of positive squares in only one way, i.e., 20265230736 + 107412496 = 142356^2 + 10364^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 318322519 + ... + 318322582.

Almost surely, 2^20372643232 is an apocalyptic number.

It is an amenable number.

20372643232 is a deficient number, since it is larger than the sum of its proper divisors (19735998194).

20372643232 is an equidigital number, since it uses as much as digits as its factorization.

20372643232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636645111 (or 636645103 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 34.

The spelling of 20372643232 in words is "twenty billion, three hundred seventy-two million, six hundred forty-three thousand, two hundred thirty-two".