21314168837 has 32 divisors (see below), whose sum is σ = 23688806400. Its totient is φ = 19055911680.

The previous prime is 21314168807. The next prime is 21314168861. The reversal of 21314168837 is 73886141312.

It is not a de Polignac number, because 21314168837 - 2⁸ = 21314168581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21314168807) 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, 19607708 + ... + 19608794.

It is an arithmetic number, because the mean of its divisors is an integer number (740275200).

Almost surely, 2^21314168837 is an apocalyptic number.

It is an amenable number.

21314168837 is a deficient number, since it is larger than the sum of its proper divisors (2374637563).

21314168837 is a wasteful number, since it uses less digits than its factorization.

21314168837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493.

The product of its digits is 193536, while the sum is 44.

The spelling of 21314168837 in words is "twenty-one billion, three hundred fourteen million, one hundred sixty-eight thousand, eight hundred thirty-seven".