2491335827278 has 8 divisors (see below), whose sum is σ = 3743835559272. Its totient is φ = 1243390640856.

The previous prime is 2491335827261. The next prime is 2491335827291. The reversal of 2491335827278 is 8727285331942.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1138635025 + ... + 1138637212.

It is an arithmetic number, because the mean of its divisors is an integer number (467979444909).

Almost surely, 2^{2491335827278} is an apocalyptic number.

2491335827278 is a deficient number, since it is larger than the sum of its proper divisors (1252499731994).

2491335827278 is a wasteful number, since it uses less digits than its factorization.

2491335827278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277272786.

The product of its digits is 40642560, while the sum is 61.

The spelling of 2491335827278 in words is "two trillion, four hundred ninety-one billion, three hundred thirty-five million, eight hundred twenty-seven thousand, two hundred seventy-eight".