53166772538 has 16 divisors (see below), whose sum is σ = 90782790336. Its totient is φ = 23115987840.

The previous prime is 53166772511. The next prime is 53166772577. The reversal of 53166772538 is 83527766135.

It is a super-2 number, since 2×53166772538² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53166772538.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52535831 + ... + 52536842.

It is an arithmetic number, because the mean of its divisors is an integer number (5673924396).

Almost surely, 2^53166772538 is an apocalyptic number.

53166772538 is a deficient number, since it is larger than the sum of its proper divisors (37616017798).

53166772538 is a wasteful number, since it uses less digits than its factorization.

53166772538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105072709.

The product of its digits is 6350400, while the sum is 53.

The spelling of 53166772538 in words is "fifty-three billion, one hundred sixty-six million, seven hundred seventy-two thousand, five hundred thirty-eight".