12551402666788 has 12 divisors (see below), whose sum is σ = 21965343815772. Its totient is φ = 6275590148000.

The previous prime is 12551402666771. The next prime is 12551402666797. The reversal of 12551402666788 is 88766620415521.

It can be written as a sum of positive squares in 2 ways, for example, as 1083643524324 + 11467759142464 = 1040982^2 + 3386408^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27542095 + ... + 27994102.

It is an arithmetic number, because the mean of its divisors is an integer number (1830445317981).

Almost surely, 2^{12551402666788} is an apocalyptic number.

It is an amenable number.

12551402666788 is a deficient number, since it is larger than the sum of its proper divisors (9413941148984).

12551402666788 is a wasteful number, since it uses less digits than its factorization.

12551402666788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55592702 (or 55592700 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 61.

The spelling of 12551402666788 in words is "twelve trillion, five hundred fifty-one billion, four hundred two million, six hundred sixty-six thousand, seven hundred eighty-eight".