21354625311700 has 36 divisors (see below), whose sum is σ = 49065392043612. Its totient is φ = 8039388352000.

The previous prime is 21354625311671. The next prime is 21354625311737. The reversal of 21354625311700 is 711352645312.

It can be written as a sum of positive squares in 6 ways, for example, as 1631398216644 + 19723227095056 = 1277262^2 + 4441084^2 .

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, 6280770451 + ... + 6280773850.

It is an arithmetic number, because the mean of its divisors is an integer number (1362927556767).

Almost surely, 2^{21354625311700} is an apocalyptic number.

21354625311700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21354625311700 is an abundant number, since it is smaller than the sum of its proper divisors (27710766731912).

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

21354625311700 is a wasteful number, since it uses less digits than its factorization.

21354625311700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12561544332 (or 12561544325 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 21354625311700 in words is "twenty-one trillion, three hundred fifty-four billion, six hundred twenty-five million, three hundred eleven thousand, seven hundred".