50111856521 has 8 divisors (see below), whose sum is σ = 50385239520. Its totient is φ = 49839189408.

The previous prime is 50111856491. The next prime is 50111856551. The reversal of 50111856521 is 12565811105.

It is an interprime number because it is at equal distance from previous prime (50111856491) and next prime (50111856551).

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

It is a cyclic number.

It is not a de Polignac number, because 50111856521 - 2²⁶ = 50044747657 is a prime.

It is a super-2 number, since 2×50111856521² (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 (50111856551) 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, 38291 + ... + 318888.

It is an arithmetic number, because the mean of its divisors is an integer number (6298154940).

Almost surely, 2^50111856521 is an apocalyptic number.

It is an amenable number.

50111856521 is a deficient number, since it is larger than the sum of its proper divisors (273382999).

50111856521 is a wasteful number, since it uses less digits than its factorization.

50111856521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357943.

The product of its (nonzero) digits is 12000, while the sum is 35.

The spelling of 50111856521 in words is "fifty billion, one hundred eleven million, eight hundred fifty-six thousand, five hundred twenty-one".