7157779322493 has 16 divisors (see below), whose sum is σ = 9768368105600. Its totient is φ = 4660790989824.

The previous prime is 7157779322489. The next prime is 7157779322537. The reversal of 7157779322493 is 3942239777517.

It is not a de Polignac number, because 7157779322493 - 2² = 7157779322489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7157779322413) 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, 158637268 + ... + 158682381.

It is an arithmetic number, because the mean of its divisors is an integer number (610523006600).

Almost surely, 2^{7157779322493} is an apocalyptic number.

7157779322493 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

7157779322493 is a deficient number, since it is larger than the sum of its proper divisors (2610588783107).

7157779322493 is a wasteful number, since it uses less digits than its factorization.

7157779322493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317319828.

The product of its digits is 140026320, while the sum is 66.

The spelling of 7157779322493 in words is "seven trillion, one hundred fifty-seven billion, seven hundred seventy-nine million, three hundred twenty-two thousand, four hundred ninety-three".