5561177066780 has 48 divisors (see below), whose sum is σ = 11879390486880. Its totient is φ = 2186219520000.

The previous prime is 5561177066779. The next prime is 5561177066813. The reversal of 5561177066780 is 876607711655.

It is a Harshad number since it is a multiple of its sum of digits (59).

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, 4132220 + ... + 5310140.

It is an arithmetic number, because the mean of its divisors is an integer number (247487301810).

Almost surely, 2^{5561177066780} is an apocalyptic number.

It is an amenable number.

5561177066780 is an abundant number, since it is smaller than the sum of its proper divisors (6318213420100).

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

5561177066780 is a wasteful number, since it uses less digits than its factorization.

5561177066780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181990 (or 1181988 counting only the distinct ones).

The product of its (nonzero) digits is 14817600, while the sum is 59.

The spelling of 5561177066780 in words is "five trillion, five hundred sixty-one billion, one hundred seventy-seven million, sixty-six thousand, seven hundred eighty".