274226091561 has 12 divisors (see below), whose sum is σ = 396779156592. Its totient is φ = 182505947256.

The previous prime is 274226091541. The next prime is 274226091569. The reversal of 274226091561 is 165190622472.

274226091561 is a `hidden beast` number, since 2 + 7 + 4 + 22 + 60 + 9 + 1 + 561 = 666.

It is not a de Polignac number, because 274226091561 - 2²⁶ = 274158982697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (274226091569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25948351 + ... + 25958916.

It is an arithmetic number, because the mean of its divisors is an integer number (33064929716).

Almost surely, 2^274226091561 is an apocalyptic number.

It is an amenable number.

274226091561 is a deficient number, since it is larger than the sum of its proper divisors (122553065031).

274226091561 is a wasteful number, since it uses less digits than its factorization.

274226091561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51907860 (or 51907857 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 274226091561 in words is "two hundred seventy-four billion, two hundred twenty-six million, ninety-one thousand, five hundred sixty-one".