21364757334250 has 64 divisors (see below), whose sum is σ = 44080520754816. Its totient is φ = 7688909760000.

The previous prime is 21364757334241. The next prime is 21364757334253. The reversal of 21364757334250 is 5243375746312.

It is not an unprimeable number, because it can be changed into a prime (21364757334253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39779656 + ... + 40313155.

It is an arithmetic number, because the mean of its divisors is an integer number (688758136794).

Almost surely, 2^{21364757334250} is an apocalyptic number.

21364757334250 is an abundant number, since it is smaller than the sum of its proper divisors (22715763420566).

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

21364757334250 is a wasteful number, since it uses less digits than its factorization.

21364757334250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80092936 (or 80092926 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 52.

The spelling of 21364757334250 in words is "twenty-one trillion, three hundred sixty-four billion, seven hundred fifty-seven million, three hundred thirty-four thousand, two hundred fifty".