274999999991 has 16 divisors (see below), whose sum is σ = 286237459200. Its totient is φ = 263984954688.

The previous prime is 274999999973. The next prime is 275000000069. The reversal of 274999999991 is 199999999472.

It is a cyclic number.

It is not a de Polignac number, because 274999999991 - 2³⁴ = 257820130807 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 (274999993991) 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, 12062195 + ... + 12084971.

It is an arithmetic number, because the mean of its divisors is an integer number (17889841200).

Almost surely, 2^274999999991 is an apocalyptic number.

274999999991 is a deficient number, since it is larger than the sum of its proper divisors (11237459209).

274999999991 is a wasteful number, since it uses less digits than its factorization.

274999999991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27638.

The product of its digits is 2410616376, while the sum is 86.

The spelling of 274999999991 in words is "two hundred seventy-four billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-one".