91536365641 has 8 divisors (see below), whose sum is σ = 106046044544. Its totient is φ = 77384950560.

The previous prime is 91536365617. The next prime is 91536365651. The reversal of 91536365641 is 14656363519.

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

It is a cyclic number.

It is not a de Polignac number, because 91536365641 - 2¹³ = 91536357449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91536365611) 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, 89565405 + ... + 89566426.

It is an arithmetic number, because the mean of its divisors is an integer number (13255755568).

Almost surely, 2^91536365641 is an apocalyptic number.

It is an amenable number.

91536365641 is a deficient number, since it is larger than the sum of its proper divisors (14509678903).

91536365641 is a wasteful number, since it uses less digits than its factorization.

91536365641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179131911.

The product of its digits is 1749600, while the sum is 49.

The spelling of 91536365641 in words is "ninety-one billion, five hundred thirty-six million, three hundred sixty-five thousand, six hundred forty-one".