20731626156424 has 32 divisors (see below), whose sum is σ = 39024530028000. Its totient is φ = 10325113690752.

The previous prime is 20731626156407. The next prime is 20731626156433. The reversal of 20731626156424 is 42465162613702.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3945012 + ... + 7551580.

It is an arithmetic number, because the mean of its divisors is an integer number (1219516563375).

Almost surely, 2^{20731626156424} is an apocalyptic number.

It is an amenable number.

20731626156424 is a deficient number, since it is larger than the sum of its proper divisors (18292903871576).

20731626156424 is a wasteful number, since it uses less digits than its factorization.

20731626156424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3609397 (or 3609393 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 20731626156424 in words is "twenty trillion, seven hundred thirty-one billion, six hundred twenty-six million, one hundred fifty-six thousand, four hundred twenty-four".