21535245052334 has 32 divisors (see below), whose sum is σ = 35108464184640. Its totient is φ = 9847706326272.

The previous prime is 21535245052309. The next prime is 21535245052351. The reversal of 21535245052334 is 43325054253512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66201527 + ... + 66526029.

It is an arithmetic number, because the mean of its divisors is an integer number (1097139505770).

Almost surely, 2^{21535245052334} is an apocalyptic number.

21535245052334 is a deficient number, since it is larger than the sum of its proper divisors (13573219132306).

21535245052334 is a wasteful number, since it uses less digits than its factorization.

21535245052334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348044.

The product of its (nonzero) digits is 2160000, while the sum is 44.

The spelling of 21535245052334 in words is "twenty-one trillion, five hundred thirty-five billion, two hundred forty-five million, fifty-two thousand, three hundred thirty-four".