93656493581 has 8 divisors (see below), whose sum is σ = 107579324160. Its totient is φ = 79869495888.

The previous prime is 93656493559. The next prime is 93656493607. The reversal of 93656493581 is 18539465639.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-93656493581 is a prime.

It is a super-2 number, since 2×93656493581² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 93656493581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93656493521) 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, 33956741 + ... + 33959498.

It is an arithmetic number, because the mean of its divisors is an integer number (13447415520).

Almost surely, 2^93656493581 is an apocalyptic number.

It is an amenable number.

93656493581 is a deficient number, since it is larger than the sum of its proper divisors (13922830579).

93656493581 is a wasteful number, since it uses less digits than its factorization.

93656493581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67916443.

The product of its digits is 20995200, while the sum is 59.

The spelling of 93656493581 in words is "ninety-three billion, six hundred fifty-six million, four hundred ninety-three thousand, five hundred eighty-one".