677551121155776 has 56 divisors (see below), whose sum is σ = 2048785533022720. Its totient is φ = 193586034615552.

The previous prime is 677551121155703. The next prime is 677551121155807.

It is a happy number.

677551121155776 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252065147896 + ... + 252065150583.

Almost surely, 2^{677551121155776} is an apocalyptic number.

It is an amenable number.

677551121155776 is an abundant number, since it is smaller than the sum of its proper divisors (1371234411866944).

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

677551121155776 is a wasteful number, since it uses less digits than its factorization.

677551121155776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504130298501 (or 504130298491 counting only the distinct ones).

The product of its digits is 108045000, while the sum is 66.

The spelling of 677551121155776 in words is "six hundred seventy-seven trillion, five hundred fifty-one billion, one hundred twenty-one million, one hundred fifty-five thousand, seven hundred seventy-six".