20372231552 has 16 divisors (see below), whose sum is σ = 40585305300. Its totient is φ = 10186115712.

The previous prime is 20372231507. The next prime is 20372231557. The reversal of 20372231552 is 25513227302.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20372231557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79578902 + ... + 79579157.

Almost surely, 2^20372231552 is an apocalyptic number.

It is an amenable number.

20372231552 is a deficient number, since it is larger than the sum of its proper divisors (20213073748).

20372231552 is an equidigital number, since it uses as much as digits as its factorization.

20372231552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159158073 (or 159158061 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

Adding to 20372231552 its reverse (25513227302), we get a palindrome (45885458854).

The spelling of 20372231552 in words is "twenty billion, three hundred seventy-two million, two hundred thirty-one thousand, five hundred fifty-two".