91364463641 has 4 divisors (see below), whose sum is σ = 99670323984. Its totient is φ = 83058603300.

The previous prime is 91364463577. The next prime is 91364463647. The reversal of 91364463641 is 14636446319.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91364463641 - 2⁶ = 91364463577 is a prime.

It is a super-2 number, since 2×91364463641² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91364463647) 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, 4152930155 + ... + 4152930176.

It is an arithmetic number, because the mean of its divisors is an integer number (24917580996).

Almost surely, 2^91364463641 is an apocalyptic number.

It is an amenable number.

91364463641 is a deficient number, since it is larger than the sum of its proper divisors (8305860343).

91364463641 is a wasteful number, since it uses less digits than its factorization.

91364463641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8305860342.

The product of its digits is 1119744, while the sum is 47.

The spelling of 91364463641 in words is "ninety-one billion, three hundred sixty-four million, four hundred sixty-three thousand, six hundred forty-one".