20791362400 has 72 divisors (see below), whose sum is σ = 51994968984. Its totient is φ = 8113689600.

The previous prime is 20791362367. The next prime is 20791362409. The reversal of 20791362400 is 426319702.

It is a super-3 number, since 3×20791362400³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20791362409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 284142 + ... + 349741.

It is an arithmetic number, because the mean of its divisors is an integer number (722152347).

Almost surely, 2^20791362400 is an apocalyptic number.

20791362400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20791362400 is an abundant number, since it is smaller than the sum of its proper divisors (31203606584).

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

20791362400 is a wasteful number, since it uses less digits than its factorization.

20791362400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633944 (or 633931 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 20791362400 in words is "twenty billion, seven hundred ninety-one million, three hundred sixty-two thousand, four hundred".