21657131420614 has 16 divisors (see below), whose sum is σ = 32780681364816. Its totient is φ = 10730675620000.

The previous prime is 21657131420567. The next prime is 21657131420627. The reversal of 21657131420614 is 41602413175612.

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, 109397797 + ... + 109595584.

It is an arithmetic number, because the mean of its divisors is an integer number (2048792585301).

Almost surely, 2^{21657131420614} is an apocalyptic number.

21657131420614 is a deficient number, since it is larger than the sum of its proper divisors (11123549944202).

21657131420614 is a wasteful number, since it uses less digits than its factorization.

21657131420614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218993831.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 21657131420614 in words is "twenty-one trillion, six hundred fifty-seven billion, one hundred thirty-one million, four hundred twenty thousand, six hundred fourteen".