50543515511 has 4 divisors (see below), whose sum is σ = 51776284224. Its totient is φ = 49310746800.

The previous prime is 50543515501. The next prime is 50543515549. The reversal of 50543515511 is 11551534505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50543515511 is a prime.

It is a super-2 number, since 2×50543515511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50543515501) 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, 616384295 + ... + 616384376.

It is an arithmetic number, because the mean of its divisors is an integer number (12944071056).

Almost surely, 2^50543515511 is an apocalyptic number.

50543515511 is a deficient number, since it is larger than the sum of its proper divisors (1232768713).

50543515511 is a wasteful number, since it uses less digits than its factorization.

50543515511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232768712.

The product of its (nonzero) digits is 37500, while the sum is 35.

The spelling of 50543515511 in words is "fifty billion, five hundred forty-three million, five hundred fifteen thousand, five hundred eleven".