1277079664956 has 48 divisors (see below), whose sum is σ = 3052685712384. Its totient is φ = 415311434496.

The previous prime is 1277079664901. The next prime is 1277079664979. The reversal of 1277079664956 is 6594669707721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 988621 + ... + 1879236.

It is an arithmetic number, because the mean of its divisors is an integer number (63597619008).

Almost surely, 2^{1277079664956} is an apocalyptic number.

It is an amenable number.

1277079664956 is an abundant number, since it is smaller than the sum of its proper divisors (1775606047428).

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

1277079664956 is a wasteful number, since it uses less digits than its factorization.

1277079664956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2868770 (or 2868768 counting only the distinct ones).

The product of its (nonzero) digits is 240045120, while the sum is 69.

The spelling of 1277079664956 in words is "one trillion, two hundred seventy-seven billion, seventy-nine million, six hundred sixty-four thousand, nine hundred fifty-six".