855087207975 has 576 divisors, whose sum is σ = 2107815091200. Its totient is φ = 319915008000.

The previous prime is 855087207971. The next prime is 855087208009. The reversal of 855087207975 is 579702780558.

855087207975 is a `hidden beast` number, since 8 + 550 + 8 + 7 + 2 + 0 + 7 + 9 + 75 = 666.

It is not a de Polignac number, because 855087207975 - 2² = 855087207971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855087207971) by changing a digit.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 3043014835 + ... + 3043015115.

It is an arithmetic number, because the mean of its divisors is an integer number (3659401200).

Almost surely, 2^855087207975 is an apocalyptic number.

855087207975 is an abundant number, since it is smaller than the sum of its proper divisors (1252727883225).

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

855087207975 is a wasteful number, since it uses less digits than its factorization.

855087207975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 49392000, while the sum is 63.

The spelling of 855087207975 in words is "eight hundred fifty-five billion, eighty-seven million, two hundred seven thousand, nine hundred seventy-five".