50138870490 has 48 divisors (see below), whose sum is σ = 130553778888. Its totient is φ = 13350599808.

The previous prime is 50138870479. The next prime is 50138870503. The reversal of 50138870490 is 9407883105.

50138870490 is a `hidden beast` number, since 5 + 0 + 13 + 88 + 70 + 490 = 666.

50138870490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 48149086041 + 1989784449 = 219429^2 + 44607^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 350517 + ... + 472376.

Almost surely, 2^50138870490 is an apocalyptic number.

50138870490 is an abundant number, since it is smaller than the sum of its proper divisors (80414908398).

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

50138870490 is a wasteful number, since it uses less digits than its factorization.

50138870490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823583 (or 823580 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 50138870490 in words is "fifty billion, one hundred thirty-eight million, eight hundred seventy thousand, four hundred ninety".