50398873920 has 140 divisors (see below), whose sum is σ = 179277753204. Its totient is φ = 13439692800.

The previous prime is 50398873913. The next prime is 50398873963. The reversal of 50398873920 is 2937889305.

It is a happy number.

50398873920 is a `hidden beast` number, since 503 + 9 + 8 + 87 + 39 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18283366656 + 32115507264 = 135216^2 + 179208^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 946281 + ... + 998120.

Almost surely, 2^50398873920 is an apocalyptic number.

It is an amenable number.

50398873920 is an abundant number, since it is smaller than the sum of its proper divisors (128878879284).

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

50398873920 is a wasteful number, since it uses less digits than its factorization.

50398873920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944430 (or 1944411 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 50398873920 in words is "fifty billion, three hundred ninety-eight million, eight hundred seventy-three thousand, nine hundred twenty".