21365525060700 has 36 divisors (see below), whose sum is σ = 61817585843160. Its totient is φ = 5697473349440.

The previous prime is 21365525060687. The next prime is 21365525060741. The reversal of 21365525060700 is 706052556312.

It is a super-2 number, since 2×21365525060700² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35609208135 + ... + 35609208734.

It is an arithmetic number, because the mean of its divisors is an integer number (1717155162310).

Almost surely, 2^{21365525060700} is an apocalyptic number.

21365525060700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21365525060700 is an abundant number, since it is smaller than the sum of its proper divisors (40452060782460).

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

21365525060700 is a wasteful number, since it uses less digits than its factorization.

21365525060700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71218416886 (or 71218416879 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 21365525060700 in words is "twenty-one trillion, three hundred sixty-five billion, five hundred twenty-five million, sixty thousand, seven hundred".