80557477475508 has 144 divisors (see below), whose sum is σ = 223401300647616. Its totient is φ = 24273406241280.

The previous prime is 80557477475459. The next prime is 80557477475509.

80557477475508 is a `hidden beast` number, since 8 + 0 + 5 + 5 + 7 + 4 + 77 + 47 + 5 + 508 = 666.

80557477475508 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80557477475509) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67036891 + ... + 68227997.

It is an arithmetic number, because the mean of its divisors is an integer number (1551397921164).

Almost surely, 2^{80557477475508} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80557477475508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111700650323808).

80557477475508 is an abundant number, since it is smaller than the sum of its proper divisors (142843823172108).

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

80557477475508 is a wasteful number, since it uses less digits than its factorization.

80557477475508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192094 (or 1192089 counting only the distinct ones).

The product of its (nonzero) digits is 1536640000, while the sum is 72.

The spelling of 80557477475508 in words is "eighty trillion, five hundred fifty-seven billion, four hundred seventy-seven million, four hundred seventy-five thousand, five hundred eight".