20631037460 has 24 divisors (see below), whose sum is σ = 47263831776. Its totient is φ = 7502195360.

The previous prime is 20631037439. The next prime is 20631037481. The reversal of 20631037460 is 6473013602.

It is an interprime number because it is at equal distance from previous prime (20631037439) and next prime (20631037481).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46888502 + ... + 46888941.

It is an arithmetic number, because the mean of its divisors is an integer number (1969326324).

Almost surely, 2^20631037460 is an apocalyptic number.

20631037460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20631037460 is an abundant number, since it is smaller than the sum of its proper divisors (26632794316).

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

20631037460 is a wasteful number, since it uses less digits than its factorization.

20631037460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93777463 (or 93777461 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The spelling of 20631037460 in words is "twenty billion, six hundred thirty-one million, thirty-seven thousand, four hundred sixty".