21736134373131 has 12 divisors (see below), whose sum is σ = 31399264050960. Its totient is φ = 14489544474000.

The previous prime is 21736134373043. The next prime is 21736134373147. The reversal of 21736134373131 is 13137343163712.

It is a happy number.

21736134373131 is a `hidden beast` number, since 2 + 1 + 73 + 6 + 13 + 437 + 3 + 131 = 666.

It is not a de Polignac number, because 21736134373131 - 2¹⁷ = 21736134242059 is a prime.

It is a super-2 number, since 2×21736134373131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21736134373531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100867620 + ... + 101082881.

It is an arithmetic number, because the mean of its divisors is an integer number (2616605337580).

Almost surely, 2^{21736134373131} is an apocalyptic number.

21736134373131 is a deficient number, since it is larger than the sum of its proper divisors (9663129677829).

21736134373131 is a wasteful number, since it uses less digits than its factorization.

21736134373131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201962466 (or 201962463 counting only the distinct ones).

The product of its digits is 571536, while the sum is 45.

The spelling of 21736134373131 in words is "twenty-one trillion, seven hundred thirty-six billion, one hundred thirty-four million, three hundred seventy-three thousand, one hundred thirty-one".