21316655151 has 48 divisors (see below), whose sum is σ = 34165797120. Its totient is φ = 12699538560.

The previous prime is 21316655137. The next prime is 21316655159. The reversal of 21316655151 is 15155661312.

21316655151 is a `hidden beast` number, since 2 + 131 + 6 + 6 + 5 + 515 + 1 = 666.

It is not a de Polignac number, because 21316655151 - 2⁵ = 21316655119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21316655159) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1389360 + ... + 1404618.

It is an arithmetic number, because the mean of its divisors is an integer number (711787440).

Almost surely, 2^21316655151 is an apocalyptic number.

21316655151 is a deficient number, since it is larger than the sum of its proper divisors (12849141969).

21316655151 is a wasteful number, since it uses less digits than its factorization.

21316655151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15516 (or 15513 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The spelling of 21316655151 in words is "twenty-one billion, three hundred sixteen million, six hundred fifty-five thousand, one hundred fifty-one".