20764025156631 has 8 divisors (see below), whose sum is σ = 27685478094064. Its totient is φ = 13842627828480.

The previous prime is 20764025156629. The next prime is 20764025156657. The reversal of 20764025156631 is 13665152046702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20764025156631 - 2¹ = 20764025156629 is a prime.

It is a super-2 number, since 2×20764025156631² (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 (20764025156671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13023130 + ... + 14530311.

It is an arithmetic number, because the mean of its divisors is an integer number (3460684761758).

Almost surely, 2^{20764025156631} is an apocalyptic number.

20764025156631 is a deficient number, since it is larger than the sum of its proper divisors (6921452937433).

20764025156631 is a wasteful number, since it uses less digits than its factorization.

20764025156631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27804641.

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 20764025156631 in words is "twenty trillion, seven hundred sixty-four billion, twenty-five million, one hundred fifty-six thousand, six hundred thirty-one".