20648229372 has 60 divisors (see below), whose sum is σ = 54738872496. Its totient is φ = 6785795520.

The previous prime is 20648229367. The next prime is 20648229397. The reversal of 20648229372 is 27392284602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 425793 + ... + 471800.

Almost surely, 2^20648229372 is an apocalyptic number.

It is an amenable number.

20648229372 is an abundant number, since it is smaller than the sum of its proper divisors (34090643124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20648229372 is a wasteful number, since it uses less digits than its factorization.

20648229372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897680 (or 897669 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 20648229372 in words is "twenty billion, six hundred forty-eight million, two hundred twenty-nine thousand, three hundred seventy-two".