50681855951 has 4 divisors (see below), whose sum is σ = 50682866904. Its totient is φ = 50680845000.

The previous prime is 50681855891. The next prime is 50681855963. The reversal of 50681855951 is 15955818605.

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-50681855951 is a prime.

It is a super-2 number, since 2×50681855951² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50681855893 and 50681855902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50681857951) 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, 426125 + ... + 531926.

It is an arithmetic number, because the mean of its divisors is an integer number (12670716726).

Almost surely, 2^50681855951 is an apocalyptic number.

50681855951 is a deficient number, since it is larger than the sum of its proper divisors (1010953).

50681855951 is an equidigital number, since it uses as much as digits as its factorization.

50681855951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010952.

The product of its (nonzero) digits is 2160000, while the sum is 53.

The spelling of 50681855951 in words is "fifty billion, six hundred eighty-one million, eight hundred fifty-five thousand, nine hundred fifty-one".