51383636605 has 24 divisors (see below), whose sum is σ = 72943100640. Its totient is φ = 34637289120.

The previous prime is 51383636593. The next prime is 51383636627. The reversal of 51383636605 is 50663638315.

It is not a de Polignac number, because 51383636605 - 2⁷ = 51383636477 is a prime.

It is a super-2 number, since 2×51383636605² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1762911 + ... + 1791820.

It is an arithmetic number, because the mean of its divisors is an integer number (3039295860).

Almost surely, 2^51383636605 is an apocalyptic number.

It is an amenable number.

51383636605 is a deficient number, since it is larger than the sum of its proper divisors (21559464035).

51383636605 is a wasteful number, since it uses less digits than its factorization.

51383636605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3554809 (or 3554802 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 51383636605 in words is "fifty-one billion, three hundred eighty-three million, six hundred thirty-six thousand, six hundred five".