99556656676 has 27 divisors (see below), whose sum is σ = 176545839729. Its totient is φ = 49123611888.

The previous prime is 99556656649. The next prime is 99556656791. The reversal of 99556656676 is 67665665599.

The square root of 99556656676 is 315526.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2477052900 + 97079603776 = 49770^2 + 311576^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 49852110 + ... + 49854106.

Almost surely, 2^99556656676 is an apocalyptic number.

99556656676 is the 315526-th square number.

It is an amenable number.

99556656676 is a deficient number, since it is larger than the sum of its proper divisors (76989183053).

99556656676 is an frugal number, since it uses more digits than its factorization.

99556656676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4156 (or 2078 counting only the distinct ones).

The product of its digits is 551124000, while the sum is 70.

The spelling of 99556656676 in words is "ninety-nine billion, five hundred fifty-six million, six hundred fifty-six thousand, six hundred seventy-six".