12761066551640 has 32 divisors (see below), whose sum is σ = 31322617900560. Its totient is φ = 4640387836800.

The previous prime is 12761066551621. The next prime is 12761066551669. The reversal of 12761066551640 is 4615566016721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14501211551 + ... + 14501212430.

Almost surely, 2^{12761066551640} is an apocalyptic number.

12761066551640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12761066551640 is an abundant number, since it is smaller than the sum of its proper divisors (18561551348920).

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

12761066551640 is a wasteful number, since it uses less digits than its factorization.

12761066551640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29002424003 (or 29002423999 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 12761066551640 in words is "twelve trillion, seven hundred sixty-one billion, sixty-six million, five hundred fifty-one thousand, six hundred forty".