91273274961657 has 8 divisors (see below), whose sum is σ = 123411752061120. Its totient is φ = 59991823918320.

The previous prime is 91273274961647. The next prime is 91273274961677. The reversal of 91273274961657 is 75616947237219.

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

It is not a de Polignac number, because 91273274961657 - 2¹⁰ = 91273274960633 is a prime.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 91273274961591 and 91273274961600.

It is not an unprimeable number, because it can be changed into a prime (91273274961607) 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, 214256513782 + ... + 214256514207.

It is an arithmetic number, because the mean of its divisors is an integer number (15426469007640).

Almost surely, 2^{91273274961657} is an apocalyptic number.

It is an amenable number.

91273274961657 is a deficient number, since it is larger than the sum of its proper divisors (32138477099463).

91273274961657 is a wasteful number, since it uses less digits than its factorization.

91273274961657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428513028063.

The product of its digits is 240045120, while the sum is 69.

The spelling of 91273274961657 in words is "ninety-one trillion, two hundred seventy-three billion, two hundred seventy-four million, nine hundred sixty-one thousand, six hundred fifty-seven".