11893799515 has 16 divisors (see below), whose sum is σ = 15373024128. Its totient is φ = 8781641856.

The previous prime is 11893799509. The next prime is 11893799587. The reversal of 11893799515 is 51599739811.

It is not a de Polignac number, because 11893799515 - 2¹⁷ = 11893668443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11893799515.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516334 + ... + 538876.

It is an arithmetic number, because the mean of its divisors is an integer number (960814008).

Almost surely, 2^11893799515 is an apocalyptic number.

11893799515 is a deficient number, since it is larger than the sum of its proper divisors (3479224613).

11893799515 is a wasteful number, since it uses less digits than its factorization.

11893799515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30678.

The product of its digits is 3061800, while the sum is 58.

The spelling of 11893799515 in words is "eleven billion, eight hundred ninety-three million, seven hundred ninety-nine thousand, five hundred fifteen".