21745555370300 has 72 divisors (see below), whose sum is σ = 50405767636896. Its totient is φ = 8114114498560.

The previous prime is 21745555370299. The next prime is 21745555370359. The reversal of 21745555370300 is 307355554712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56407472 + ... + 56791671.

It is an arithmetic number, because the mean of its divisors is an integer number (700080106068).

Almost surely, 2^{21745555370300} is an apocalyptic number.

21745555370300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21745555370300 is an abundant number, since it is smaller than the sum of its proper divisors (28660212266596).

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

21745555370300 is a wasteful number, since it uses less digits than its factorization.

21745555370300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113199287 (or 113199280 counting only the distinct ones).

The product of its (nonzero) digits is 2205000, while the sum is 47.

The spelling of 21745555370300 in words is "twenty-one trillion, seven hundred forty-five billion, five hundred fifty-five million, three hundred seventy thousand, three hundred".