21256053535414 has 8 divisors (see below), whose sum is σ = 31889151751968. Its totient is φ = 10626336284760.

The previous prime is 21256053535397. The next prime is 21256053535471. The reversal of 21256053535414 is 41453535065212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845225757 + ... + 845250904.

It is an arithmetic number, because the mean of its divisors is an integer number (3986143968996).

Almost surely, 2^{21256053535414} is an apocalyptic number.

21256053535414 is a deficient number, since it is larger than the sum of its proper divisors (10633098216554).

21256053535414 is a wasteful number, since it uses less digits than its factorization.

21256053535414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690482950.

The product of its (nonzero) digits is 2160000, while the sum is 46.

The spelling of 21256053535414 in words is "twenty-one trillion, two hundred fifty-six billion, fifty-three million, five hundred thirty-five thousand, four hundred fourteen".