50787191690 has 16 divisors (see below), whose sum is σ = 91799447040. Its totient is φ = 20229876240.

The previous prime is 50787191579. The next prime is 50787191699. The reversal of 50787191690 is 9619178705.

50787191690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×50787191690² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50787191699) 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, 10622546 + ... + 10627325.

It is an arithmetic number, because the mean of its divisors is an integer number (5737465440).

Almost surely, 2^50787191690 is an apocalyptic number.

50787191690 is a deficient number, since it is larger than the sum of its proper divisors (41012255350).

50787191690 is a wasteful number, since it uses less digits than its factorization.

50787191690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21250117.

The product of its (nonzero) digits is 952560, while the sum is 53.

The spelling of 50787191690 in words is "fifty billion, seven hundred eighty-seven million, one hundred ninety-one thousand, six hundred ninety".