11619692812 has 72 divisors (see below), whose sum is σ = 25660653984. Its totient is φ = 4563111168.

The previous prime is 11619692809. The next prime is 11619692849. The reversal of 11619692812 is 21829691611.

It is a happy number.

It is a super-2 number, since 2×11619692812² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 332433 + ... + 365719.

It is an arithmetic number, because the mean of its divisors is an integer number (356397972).

Almost surely, 2^11619692812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11619692812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12830326992).

11619692812 is an abundant number, since it is smaller than the sum of its proper divisors (14040961172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11619692812 is a wasteful number, since it uses less digits than its factorization.

11619692812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33455 (or 33446 counting only the distinct ones).

The product of its digits is 93312, while the sum is 46.

The spelling of 11619692812 in words is "eleven billion, six hundred nineteen million, six hundred ninety-two thousand, eight hundred twelve".