551220140555 has 48 divisors (see below), whose sum is σ = 797849245440. Its totient is φ = 357140871360.

The previous prime is 551220140531. The next prime is 551220140561. The reversal of 551220140555 is 555041022155.

It is not a de Polignac number, because 551220140555 - 2⁸ = 551220140299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 447781790 + ... + 447783020.

It is an arithmetic number, because the mean of its divisors is an integer number (16621859280).

Almost surely, 2^551220140555 is an apocalyptic number.

551220140555 is a deficient number, since it is larger than the sum of its proper divisors (246629104885).

551220140555 is an equidigital number, since it uses as much as digits as its factorization.

551220140555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3040 (or 1809 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 551220140555 in words is "five hundred fifty-one billion, two hundred twenty million, one hundred forty thousand, five hundred fifty-five".