1291792916770 has 8 divisors (see below), whose sum is σ = 2325227250204. Its totient is φ = 516717166704.

The previous prime is 1291792916753. The next prime is 1291792916783. The reversal of 1291792916770 is 776192971921.

It can be written as a sum of positive squares in 2 ways, for example, as 1256710502961 + 35082413809 = 1121031^2 + 187303^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1291792916699 and 1291792916708.

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, 64589645829 + ... + 64589645848.

Almost surely, 2^{1291792916770} is an apocalyptic number.

1291792916770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1291792916770 is a deficient number, since it is larger than the sum of its proper divisors (1033434333434).

1291792916770 is a wasteful number, since it uses less digits than its factorization.

1291792916770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129179291684.

The product of its (nonzero) digits is 6001128, while the sum is 61.

The spelling of 1291792916770 in words is "one trillion, two hundred ninety-one billion, seven hundred ninety-two million, nine hundred sixteen thousand, seven hundred seventy".