50428628991 has 48 divisors (see below), whose sum is σ = 80169048960. Its totient is φ = 30351697920.

The previous prime is 50428628927. The next prime is 50428628993. The reversal of 50428628991 is 19982682405.

It is a happy number.

50428628991 is a `hidden beast` number, since 5 + 0 + 4 + 2 + 8 + 628 + 9 + 9 + 1 = 666.

It is not a de Polignac number, because 50428628991 - 2⁶ = 50428628927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50428628993) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12211215 + ... + 12215343.

It is an arithmetic number, because the mean of its divisors is an integer number (1670188520).

Almost surely, 2^50428628991 is an apocalyptic number.

50428628991 is a deficient number, since it is larger than the sum of its proper divisors (29740419969).

50428628991 is a wasteful number, since it uses less digits than its factorization.

50428628991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6416 (or 6413 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 50428628991 in words is "fifty billion, four hundred twenty-eight million, six hundred twenty-eight thousand, nine hundred ninety-one".