91464779701 has 4 divisors (see below), whose sum is σ = 93936800812. Its totient is φ = 88992758592.

The previous prime is 91464779663. The next prime is 91464779713. The reversal of 91464779701 is 10797746419.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81504540100 + 9960239601 = 285490^2 + 99801^2 .

It is a cyclic number.

It is not a de Polignac number, because 91464779701 - 2³⁵ = 57105041333 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 (91464779741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1236010500 + ... + 1236010573.

It is an arithmetic number, because the mean of its divisors is an integer number (23484200203).

Almost surely, 2^91464779701 is an apocalyptic number.

It is an amenable number.

91464779701 is a deficient number, since it is larger than the sum of its proper divisors (2472021111).

91464779701 is a wasteful number, since it uses less digits than its factorization.

91464779701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472021110.

The product of its (nonzero) digits is 2667168, while the sum is 55.

The spelling of 91464779701 in words is "ninety-one billion, four hundred sixty-four million, seven hundred seventy-nine thousand, seven hundred one".