21007112759631 has 12 divisors (see below), whose sum is σ = 30359305020408. Its totient is φ = 13997496747024.

The previous prime is 21007112759587. The next prime is 21007112759683. The reversal of 21007112759631 is 13695721170012.

21007112759631 is a `hidden beast` number, since 2 + 1 + 0 + 0 + 7 + 1 + 1 + 2 + 7 + 5 + 9 + 631 = 666.

It is not a de Polignac number, because 21007112759631 - 2¹³ = 21007112751439 is a prime.

It is a super-2 number, since 2×21007112759631² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21007112759231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 603739365 + ... + 603774158.

It is an arithmetic number, because the mean of its divisors is an integer number (2529942085034).

Almost surely, 2^{21007112759631} is an apocalyptic number.

21007112759631 is a deficient number, since it is larger than the sum of its proper divisors (9352192260777).

21007112759631 is a wasteful number, since it uses less digits than its factorization.

21007112759631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207515462 (or 1207515459 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The spelling of 21007112759631 in words is "twenty-one trillion, seven billion, one hundred twelve million, seven hundred fifty-nine thousand, six hundred thirty-one".