20461370720 has 96 divisors (see below), whose sum is σ = 56024027136. Its totient is φ = 6916492800.

The previous prime is 20461370659. The next prime is 20461370753. The reversal of 20461370720 is 2707316402.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49136 + ... + 208175.

It is an arithmetic number, because the mean of its divisors is an integer number (583583616).

Almost surely, 2^20461370720 is an apocalyptic number.

20461370720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20461370720 is an abundant number, since it is smaller than the sum of its proper divisors (35562656416).

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

20461370720 is a wasteful number, since it uses less digits than its factorization.

20461370720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257404 (or 257396 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The spelling of 20461370720 in words is "twenty billion, four hundred sixty-one million, three hundred seventy thousand, seven hundred twenty".