50492978521992 has 384 divisors, whose sum is σ = 158780892816000. Its totient is φ = 14393000263680.

The previous prime is 50492978521991. The next prime is 50492978522017. The reversal of 50492978521992 is 29912587929405.

50492978521992 is a `hidden beast` number, since 5 + 0 + 4 + 9 + 2 + 9 + 7 + 8 + 521 + 9 + 92 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 50492978521992.

It is not an unprimeable number, because it can be changed into a prime (50492978521991) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 55807488 + ... + 56705040.

It is an arithmetic number, because the mean of its divisors is an integer number (413491908375).

Almost surely, 2^{50492978521992} 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 50492978521992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79390446408000).

50492978521992 is an abundant number, since it is smaller than the sum of its proper divisors (108287914294008).

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

50492978521992 is a wasteful number, since it uses less digits than its factorization.

50492978521992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897701 (or 897694 counting only the distinct ones).

The product of its (nonzero) digits is 293932800, while the sum is 72.

The spelling of 50492978521992 in words is "fifty trillion, four hundred ninety-two billion, nine hundred seventy-eight million, five hundred twenty-one thousand, nine hundred ninety-two".