1277668598160 has 80 divisors (see below), whose sum is σ = 3968375293440. Its totient is φ = 340057635840.

The previous prime is 1277668598153. The next prime is 1277668598197. The reversal of 1277668598160 is 618958667721.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1277668598091 and 1277668598100.

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, 4984000 + ... + 5234079.

It is an arithmetic number, because the mean of its divisors is an integer number (49604691168).

Almost surely, 2^{1277668598160} is an apocalyptic number.

1277668598160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1277668598160 is an abundant number, since it is smaller than the sum of its proper divisors (2690706695280).

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

1277668598160 is a wasteful number, since it uses less digits than its factorization.

1277668598160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10218616 (or 10218610 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 66.

The spelling of 1277668598160 in words is "one trillion, two hundred seventy-seven billion, six hundred sixty-eight million, five hundred ninety-eight thousand, one hundred sixty".