13212463992 has 128 divisors (see below), whose sum is σ = 40882060800. Its totient is φ = 3465036288.

The previous prime is 13212463973. The next prime is 13212463997. The reversal of 13212463992 is 29936421231.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212463997) 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, 374038 + ... + 407834.

It is an arithmetic number, because the mean of its divisors is an integer number (319391100).

Almost surely, 2^13212463992 is an apocalyptic number.

13212463992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13212463992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20441030400).

13212463992 is an abundant number, since it is smaller than the sum of its proper divisors (27669596808).

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

13212463992 is a wasteful number, since it uses less digits than its factorization.

13212463992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34005 (or 34001 counting only the distinct ones).

The product of its digits is 139968, while the sum is 42.

The spelling of 13212463992 in words is "thirteen billion, two hundred twelve million, four hundred sixty-three thousand, nine hundred ninety-two".