2491335827279 has 8 divisors (see below), whose sum is σ = 2726960275872. Its totient is φ = 2261994697440.

The previous prime is 2491335827261. The next prime is 2491335827291. The reversal of 2491335827279 is 9727285331942.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2491335827279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491335820279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1570828859 + ... + 1570830444.

It is an arithmetic number, because the mean of its divisors is an integer number (340870034484).

Almost surely, 2^{2491335827279} is an apocalyptic number.

2491335827279 is a deficient number, since it is larger than the sum of its proper divisors (235624448593).

2491335827279 is a wasteful number, since it uses less digits than its factorization.

2491335827279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3141659377.

The product of its digits is 45722880, while the sum is 62.

The spelling of 2491335827279 in words is "two trillion, four hundred ninety-one billion, three hundred thirty-five million, eight hundred twenty-seven thousand, two hundred seventy-nine".