2491167940368 has 20 divisors (see below), whose sum is σ = 6435517179408. Its totient is φ = 830389313440.

The previous prime is 2491167940357. The next prime is 2491167940369. The reversal of 2491167940368 is 8630497611942.

It is not an unprimeable number, because it can be changed into a prime (2491167940369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25949665998 + ... + 25949666093.

Almost surely, 2^{2491167940368} is an apocalyptic number.

It is an amenable number.

2491167940368 is an abundant number, since it is smaller than the sum of its proper divisors (3944349239040).

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

2491167940368 is a wasteful number, since it uses less digits than its factorization.

2491167940368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51899332102 (or 51899332096 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 2491167940368 in words is "two trillion, four hundred ninety-one billion, one hundred sixty-seven million, nine hundred forty thousand, three hundred sixty-eight".