11635315993 has 4 divisors (see below), whose sum is σ = 13297504000. Its totient is φ = 9973127988.

The previous prime is 11635315987. The next prime is 11635316051. The reversal of 11635315993 is 39951353611.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39951353611 = 13 ⋅3073181047.

It is a cyclic number.

It is not a de Polignac number, because 11635315993 - 2⁹ = 11635315481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11635315903) 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, 831093993 + ... + 831094006.

It is an arithmetic number, because the mean of its divisors is an integer number (3324376000).

Almost surely, 2^11635315993 is an apocalyptic number.

It is an amenable number.

11635315993 is a deficient number, since it is larger than the sum of its proper divisors (1662188007).

11635315993 is an equidigital number, since it uses as much as digits as its factorization.

11635315993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662188006.

The product of its digits is 328050, while the sum is 46.

The spelling of 11635315993 in words is "eleven billion, six hundred thirty-five million, three hundred fifteen thousand, nine hundred ninety-three".