855504576780 has 96 divisors (see below), whose sum is σ = 2832015191040. Its totient is φ = 188801007360.

The previous prime is 855504576737. The next prime is 855504576781. The reversal of 855504576780 is 87675405558.

It is a hoax number, since the sum of its digits (60) 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 (60).

It is not an unprimeable number, because it can be changed into a prime (855504576781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35107056 + ... + 35131415.

It is an arithmetic number, because the mean of its divisors is an integer number (29500158240).

Almost surely, 2^855504576780 is an apocalyptic number.

It is an amenable number.

855504576780 is an abundant number, since it is smaller than the sum of its proper divisors (1976510614260).

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

855504576780 is a wasteful number, since it uses less digits than its factorization.

855504576780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70238519 (or 70238517 counting only the distinct ones).

The product of its (nonzero) digits is 47040000, while the sum is 60.

The spelling of 855504576780 in words is "eight hundred fifty-five billion, five hundred four million, five hundred seventy-six thousand, seven hundred eighty".