11864537493 has 8 divisors (see below), whose sum is σ = 15841146048. Its totient is φ = 7898810304.

The previous prime is 11864537467. The next prime is 11864537497. The reversal of 11864537493 is 39473546811.

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

It is not a de Polignac number, because 11864537493 - 2⁶ = 11864537429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11864537497) 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, 2717796 + ... + 2722157.

It is an arithmetic number, because the mean of its divisors is an integer number (1980143256).

Almost surely, 2^11864537493 is an apocalyptic number.

It is an amenable number.

11864537493 is a deficient number, since it is larger than the sum of its proper divisors (3976608555).

11864537493 is an equidigital number, since it uses as much as digits as its factorization.

11864537493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5440683.

The product of its digits is 2177280, while the sum is 51.

The spelling of 11864537493 in words is "eleven billion, eight hundred sixty-four million, five hundred thirty-seven thousand, four hundred ninety-three".