55820470980 has 48 divisors (see below), whose sum is σ = 156365866944. Its totient is φ = 14878930560.

The previous prime is 55820470969. The next prime is 55820470987. The reversal of 55820470980 is 8907402855.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (55820470987) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 65286 + ... + 340445.

It is an arithmetic number, because the mean of its divisors is an integer number (3257622228).

Almost surely, 2^55820470980 is an apocalyptic number.

It is an amenable number.

55820470980 is an abundant number, since it is smaller than the sum of its proper divisors (100545395964).

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

55820470980 is a wasteful number, since it uses less digits than its factorization.

55820470980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408036 (or 408034 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 55820470980 in words is "fifty-five billion, eight hundred twenty million, four hundred seventy thousand, nine hundred eighty".