20630042972 has 48 divisors (see below), whose sum is σ = 45050487552. Its totient is φ = 8030628480.

The previous prime is 20630042969. The next prime is 20630042977. The reversal of 20630042972 is 27924003602.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20630042977) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 329408 + ... + 387000.

It is an arithmetic number, because the mean of its divisors is an integer number (938551824).

Almost surely, 2^20630042972 is an apocalyptic number.

20630042972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20630042972 is an abundant number, since it is smaller than the sum of its proper divisors (24420444580).

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

20630042972 is a wasteful number, since it uses less digits than its factorization.

20630042972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58778 (or 58776 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The spelling of 20630042972 in words is "twenty billion, six hundred thirty million, forty-two thousand, nine hundred seventy-two".