50918821740 has 144 divisors (see below), whose sum is σ = 157356815616. Its totient is φ = 13325328000.

The previous prime is 50918821711. The next prime is 50918821817. The reversal of 50918821740 is 4712881905.

50918821740 is a `hidden beast` number, since 509 + 1 + 88 + 21 + 7 + 40 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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 47 ways as a sum of consecutive naturals, for example, 2244655 + ... + 2267225.

It is an arithmetic number, because the mean of its divisors is an integer number (1092755664).

Almost surely, 2^50918821740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50918821740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78678407808).

50918821740 is an abundant number, since it is smaller than the sum of its proper divisors (106437993876).

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

50918821740 is a wasteful number, since it uses less digits than its factorization.

50918821740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22820 (or 22815 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 50918821740 in words is "fifty billion, nine hundred eighteen million, eight hundred twenty-one thousand, seven hundred forty".