20631502632 has 32 divisors (see below), whose sum is σ = 55546354080. Its totient is φ = 6348154560.

The previous prime is 20631502631. The next prime is 20631502637. The reversal of 20631502632 is 23620513602.

It is a self number, because there is not a number n which added to its sum of digits gives 20631502632.

It is not an unprimeable number, because it can be changed into a prime (20631502631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33062994 + ... + 33063617.

It is an arithmetic number, because the mean of its divisors is an integer number (1735823565).

Almost surely, 2^20631502632 is an apocalyptic number.

It is an amenable number.

20631502632 is an abundant number, since it is smaller than the sum of its proper divisors (34914851448).

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

20631502632 is a wasteful number, since it uses less digits than its factorization.

20631502632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66126633 (or 66126629 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The spelling of 20631502632 in words is "twenty billion, six hundred thirty-one million, five hundred two thousand, six hundred thirty-two".