961267719915 has 40 divisors (see below), whose sum is σ = 1824523842240. Its totient is φ = 482518695168.

The previous prime is 961267719911. The next prime is 961267719931. The reversal of 961267719915 is 519917762169.

961267719915 is a `hidden beast` number, since 9 + 612 + 6 + 7 + 7 + 1 + 9 + 9 + 1 + 5 = 666.

It is not a de Polignac number, because 961267719915 - 2² = 961267719911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (961267719911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 69801955 + ... + 69815724.

It is an arithmetic number, because the mean of its divisors is an integer number (45613096056).

Almost surely, 2^961267719915 is an apocalyptic number.

961267719915 is a deficient number, since it is larger than the sum of its proper divisors (863256122325).

961267719915 is a wasteful number, since it uses less digits than its factorization.

961267719915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139617713 (or 139617704 counting only the distinct ones).

The product of its digits is 12859560, while the sum is 63.

The spelling of 961267719915 in words is "nine hundred sixty-one billion, two hundred sixty-seven million, seven hundred nineteen thousand, nine hundred fifteen".