55156666612 has 6 divisors (see below), whose sum is σ = 96524166578. Its totient is φ = 27578333304.

The previous prime is 55156666573. The next prime is 55156666639. The reversal of 55156666612 is 21666665155.

It can be written as a sum of positive squares in only one way, i.e., 33795674896 + 21360991716 = 183836^2 + 146154^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6894583323 + ... + 6894583330.

Almost surely, 2^55156666612 is an apocalyptic number.

It is an amenable number.

55156666612 is a deficient number, since it is larger than the sum of its proper divisors (41367499966).

55156666612 is a wasteful number, since it uses less digits than its factorization.

55156666612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13789166657 (or 13789166655 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 49.

The spelling of 55156666612 in words is "fifty-five billion, one hundred fifty-six million, six hundred sixty-six thousand, six hundred twelve".