551320504000 has 112 divisors (see below), whose sum is σ = 1560394704960. Its totient is φ = 189024153600.

The previous prime is 551320503973. The next prime is 551320504043. The reversal of 551320504000 is 405023155.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 4866505 + ... + 4978504.

It is an arithmetic number, because the mean of its divisors is an integer number (13932095580).

Almost surely, 2^551320504000 is an apocalyptic number.

551320504000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

551320504000 is an abundant number, since it is smaller than the sum of its proper divisors (1009074200960).

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

551320504000 is an equidigital number, since it uses as much as digits as its factorization.

551320504000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9845043 (or 9845023 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

Adding to 551320504000 its reverse (405023155), we get a palindrome (551725527155).

The spelling of 551320504000 in words is "five hundred fifty-one billion, three hundred twenty million, five hundred four thousand".