50697871633 has 4 divisors (see below), whose sum is σ = 50818869360. Its totient is φ = 50576873908.

The previous prime is 50697871591. The next prime is 50697871657. The reversal of 50697871633 is 33617879605.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33617879605 = 5 ⋅6723575921.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50697871633 is a prime.

It is a super-2 number, since 2×50697871633² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50697871663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60498235 + ... + 60499072.

It is an arithmetic number, because the mean of its divisors is an integer number (12704717340).

Almost surely, 2^50697871633 is an apocalyptic number.

It is an amenable number.

50697871633 is a deficient number, since it is larger than the sum of its proper divisors (120997727).

50697871633 is a wasteful number, since it uses less digits than its factorization.

50697871633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120997726.

The product of its (nonzero) digits is 5715360, while the sum is 55.

The spelling of 50697871633 in words is "fifty billion, six hundred ninety-seven million, eight hundred seventy-one thousand, six hundred thirty-three".