50137749209 has 8 divisors (see below), whose sum is σ = 50371893000. Its totient is φ = 49903767936.

The previous prime is 50137749169. The next prime is 50137749247. The reversal of 50137749209 is 90294773105.

It can be written as a sum of positive squares in 4 ways, for example, as 4879441609 + 45258307600 = 69853^2 + 212740^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50137749209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50137749509) 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, 601379 + ... + 679655.

It is an arithmetic number, because the mean of its divisors is an integer number (6296486625).

Almost surely, 2^50137749209 is an apocalyptic number.

It is an amenable number.

50137749209 is a deficient number, since it is larger than the sum of its proper divisors (234143791).

50137749209 is a wasteful number, since it uses less digits than its factorization.

50137749209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81259.

The product of its (nonzero) digits is 476280, while the sum is 47.

The spelling of 50137749209 in words is "fifty billion, one hundred thirty-seven million, seven hundred forty-nine thousand, two hundred nine".