50610011561 has 4 divisors (see below), whose sum is σ = 53273696400. Its totient is φ = 47946326724.

The previous prime is 50610011549. The next prime is 50610011567. The reversal of 50610011561 is 16511001605.

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.

It is a cyclic number.

It is not a de Polignac number, because 50610011561 - 2⁶ = 50610011497 is a prime.

It is a super-2 number, since 2×50610011561² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50610011561.

It is not an unprimeable number, because it can be changed into a prime (50610011567) 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, 1331842391 + ... + 1331842428.

It is an arithmetic number, because the mean of its divisors is an integer number (13318424100).

Almost surely, 2^50610011561 is an apocalyptic number.

It is an amenable number.

50610011561 is a deficient number, since it is larger than the sum of its proper divisors (2663684839).

50610011561 is a wasteful number, since it uses less digits than its factorization.

50610011561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663684838.

The product of its (nonzero) digits is 900, while the sum is 26.

The spelling of 50610011561 in words is "fifty billion, six hundred ten million, eleven thousand, five hundred sixty-one".