775551847980 has 192 divisors, whose sum is σ = 2829887262720. Its totient is φ = 154007433216.

The previous prime is 775551847937. The next prime is 775551847991. The reversal of 775551847980 is 89748155577.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4084900 + ... + 4270539.

It is an arithmetic number, because the mean of its divisors is an integer number (14738996160).

Almost surely, 2^775551847980 is an apocalyptic number.

775551847980 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

775551847980 is an abundant number, since it is smaller than the sum of its proper divisors (2054335414740).

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

775551847980 is a wasteful number, since it uses less digits than its factorization.

775551847980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8355488 (or 8355486 counting only the distinct ones).

The product of its (nonzero) digits is 98784000, while the sum is 66.

The spelling of 775551847980 in words is "seven hundred seventy-five billion, five hundred fifty-one million, eight hundred forty-seven thousand, nine hundred eighty".