21364757653254 has 16 divisors (see below), whose sum is σ = 42906816202800. Its totient is φ = 7092035735040.

The previous prime is 21364757653189. The next prime is 21364757653273. The reversal of 21364757653254 is 45235675746312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7387535779 + ... + 7387538670.

It is an arithmetic number, because the mean of its divisors is an integer number (2681676012675).

Almost surely, 2^{21364757653254} is an apocalyptic number.

21364757653254 is an abundant number, since it is smaller than the sum of its proper divisors (21542058549546).

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

21364757653254 is a wasteful number, since it uses less digits than its factorization.

21364757653254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14775074695.

The product of its digits is 127008000, while the sum is 60.

The spelling of 21364757653254 in words is "twenty-one trillion, three hundred sixty-four billion, seven hundred fifty-seven million, six hundred fifty-three thousand, two hundred fifty-four".