654112648136 has 8 divisors (see below), whose sum is σ = 1226461215270. Its totient is φ = 327056324064.

The previous prime is 654112648109. The next prime is 654112648169. The reversal of 654112648136 is 631846211456.

It can be written as a sum of positive squares in only one way, i.e., 651846316900 + 2266331236 = 807370^2 + 47606^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40882040501 + ... + 40882040516.

Almost surely, 2^654112648136 is an apocalyptic number.

It is an amenable number.

654112648136 is a deficient number, since it is larger than the sum of its proper divisors (572348567134).

654112648136 is a wasteful number, since it uses less digits than its factorization.

654112648136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81764081023 (or 81764081019 counting only the distinct ones).

The product of its digits is 829440, while the sum is 47.

The spelling of 654112648136 in words is "six hundred fifty-four billion, one hundred twelve million, six hundred forty-eight thousand, one hundred thirty-six".