21374332310500 has 96 divisors (see below), whose sum is σ = 50274202069728. Its totient is φ = 7891782912000.

The previous prime is 21374332310483. The next prime is 21374332310549. The reversal of 21374332310500 is 501323347312.

It can be written as a sum of positive squares in 16 ways, for example, as 21372110508004 + 2221802496 = 4622998^2 + 47136^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 321593272 + ... + 321659728.

It is an arithmetic number, because the mean of its divisors is an integer number (523689604893).

Almost surely, 2^{21374332310500} is an apocalyptic number.

21374332310500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21374332310500 is an abundant number, since it is smaller than the sum of its proper divisors (28899869759228).

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

21374332310500 is a wasteful number, since it uses less digits than its factorization.

21374332310500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115970 (or 115958 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 34.

Adding to 21374332310500 its reverse (501323347312), we get a palindrome (21875655657812).

The spelling of 21374332310500 in words is "twenty-one trillion, three hundred seventy-four billion, three hundred thirty-two million, three hundred ten thousand, five hundred".