50515404240 has 80 divisors (see below), whose sum is σ = 178968866688. Its totient is φ = 11546377728.

The previous prime is 50515404209. The next prime is 50515404259. The reversal of 50515404240 is 4240451505.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 50515404198 and 50515404207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15032667 + ... + 15036026.

Almost surely, 2^50515404240 is an apocalyptic number.

It is an amenable number.

50515404240 is an abundant number, since it is smaller than the sum of its proper divisors (128453462448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50515404240 is a wasteful number, since it uses less digits than its factorization.

50515404240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30068716 (or 30068710 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 50515404240 its reverse (4240451505), we get a palindrome (54755855745).

The spelling of 50515404240 in words is "fifty billion, five hundred fifteen million, four hundred four thousand, two hundred forty".