855480009020 has 48 divisors (see below), whose sum is σ = 2211086797248. Its totient is φ = 270745320960.

The previous prime is 855480009019. The next prime is 855480009047. The reversal of 855480009020 is 20900084558.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235020161 + ... + 235023800.

It is an arithmetic number, because the mean of its divisors is an integer number (46064308276).

Almost surely, 2^855480009020 is an apocalyptic number.

It is an amenable number.

855480009020 is an abundant number, since it is smaller than the sum of its proper divisors (1355606788228).

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

855480009020 is a wasteful number, since it uses less digits than its factorization.

855480009020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470043990 (or 470043988 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 855480009020 in words is "eight hundred fifty-five billion, four hundred eighty million, nine thousand, twenty".