21151363848231 has 16 divisors (see below), whose sum is σ = 29222961743360. Its totient is φ = 13598639570880.

The previous prime is 21151363848211. The next prime is 21151363848239. The reversal of 21151363848231 is 13284836315112.

It is not a de Polignac number, because 21151363848231 - 2⁷ = 21151363848103 is a prime.

It is a super-2 number, since 2×21151363848231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21151363848239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1037737030 + ... + 1037757411.

It is an arithmetic number, because the mean of its divisors is an integer number (1826435108960).

Almost surely, 2^{21151363848231} is an apocalyptic number.

21151363848231 is a deficient number, since it is larger than the sum of its proper divisors (8071597895129).

21151363848231 is a wasteful number, since it uses less digits than its factorization.

21151363848231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075494566.

The product of its digits is 829440, while the sum is 48.

The spelling of 21151363848231 in words is "twenty-one trillion, one hundred fifty-one billion, three hundred sixty-three million, eight hundred forty-eight thousand, two hundred thirty-one".