91464668488 has 8 divisors (see below), whose sum is σ = 171496253430. Its totient is φ = 45732334240.

The previous prime is 91464668483. The next prime is 91464668513. The reversal of 91464668488 is 88486646419.

It can be written as a sum of positive squares in only one way, i.e., 59703012964 + 31761655524 = 244342^2 + 178218^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×91464668488² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91464668483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5716541773 + ... + 5716541788.

Almost surely, 2^91464668488 is an apocalyptic number.

It is an amenable number.

91464668488 is a deficient number, since it is larger than the sum of its proper divisors (80031584942).

91464668488 is a wasteful number, since it uses less digits than its factorization.

91464668488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11433083567 (or 11433083563 counting only the distinct ones).

The product of its digits is 63700992, while the sum is 64.

The spelling of 91464668488 in words is "ninety-one billion, four hundred sixty-four million, six hundred sixty-eight thousand, four hundred eighty-eight".