11812679619 has 32 divisors (see below), whose sum is σ = 17968184640. Its totient is φ = 6838444032.

The previous prime is 11812679581. The next prime is 11812679633. The reversal of 11812679619 is 91697621811.

It is not a de Polignac number, because 11812679619 - 2¹⁵ = 11812646851 is a prime.

It is a super-2 number, since 2×11812679619² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (11812679419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2355787 + ... + 2360795.

It is an arithmetic number, because the mean of its divisors is an integer number (561505770).

Almost surely, 2^11812679619 is an apocalyptic number.

11812679619 is a deficient number, since it is larger than the sum of its proper divisors (6155505021).

11812679619 is a wasteful number, since it uses less digits than its factorization.

11812679619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8599.

The product of its digits is 326592, while the sum is 51.

The spelling of 11812679619 in words is "eleven billion, eight hundred twelve million, six hundred seventy-nine thousand, six hundred nineteen".