855426572280 has 384 divisors, whose sum is σ = 3332022220800. Its totient is φ = 193327782912.

The previous prime is 855426572263. The next prime is 855426572333. The reversal of 855426572280 is 82275624558.

855426572280 is a `hidden beast` number, since 8 + 5 + 5 + 42 + 6 + 572 + 28 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5984929 + ... + 6126191.

It is an arithmetic number, because the mean of its divisors is an integer number (8677141200).

Almost surely, 2^855426572280 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 855426572280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1666011110400).

855426572280 is an abundant number, since it is smaller than the sum of its proper divisors (2476595648520).

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

855426572280 is a wasteful number, since it uses less digits than its factorization.

855426572280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141385 (or 141369 counting only the distinct ones).

The product of its (nonzero) digits is 10752000, while the sum is 54.

The spelling of 855426572280 in words is "eight hundred fifty-five billion, four hundred twenty-six million, five hundred seventy-two thousand, two hundred eighty".