50739388985 has 16 divisors (see below), whose sum is σ = 61281890496. Its totient is φ = 40328601408.

The previous prime is 50739388967. The next prime is 50739388991. The reversal of 50739388985 is 58988393705.

It is a cyclic number.

It is not a de Polignac number, because 50739388985 - 2⁸ = 50739388729 is a prime.

It is a super-2 number, since 2×50739388985² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 2816627 + ... + 2834583.

It is an arithmetic number, because the mean of its divisors is an integer number (3830118156).

Almost surely, 2^50739388985 is an apocalyptic number.

It is an amenable number.

50739388985 is a deficient number, since it is larger than the sum of its proper divisors (10542501511).

50739388985 is a wasteful number, since it uses less digits than its factorization.

50739388985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21592.

The product of its (nonzero) digits is 65318400, while the sum is 65.

The spelling of 50739388985 in words is "fifty billion, seven hundred thirty-nine million, three hundred eighty-eight thousand, nine hundred eighty-five".