1172491345915 has 16 divisors (see below), whose sum is σ = 1507843165248. Its totient is φ = 872961826176.

The previous prime is 1172491345897. The next prime is 1172491345919. The reversal of 1172491345915 is 5195431942711.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1172491345915 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1172491345919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137773812 + ... + 137782321.

It is an arithmetic number, because the mean of its divisors is an integer number (94240197828).

Almost surely, 2^{1172491345915} is an apocalyptic number.

1172491345915 is a deficient number, since it is larger than the sum of its proper divisors (335351819333).

1172491345915 is a wasteful number, since it uses less digits than its factorization.

1172491345915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275556198.

The product of its digits is 1360800, while the sum is 52.

The spelling of 1172491345915 in words is "one trillion, one hundred seventy-two billion, four hundred ninety-one million, three hundred forty-five thousand, nine hundred fifteen".