12779043452 has 24 divisors (see below), whose sum is σ = 25821577824. Its totient is φ = 5420270592.

The previous prime is 12779043443. The next prime is 12779043481. The reversal of 12779043452 is 25434097721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2349833 + ... + 2355264.

It is an arithmetic number, because the mean of its divisors is an integer number (1075899076).

Almost surely, 2^12779043452 is an apocalyptic number.

It is an amenable number.

12779043452 is an abundant number, since it is smaller than the sum of its proper divisors (13042534372).

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

12779043452 is a wasteful number, since it uses less digits than its factorization.

12779043452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4705205 (or 4705203 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 12779043452 in words is "twelve billion, seven hundred seventy-nine million, forty-three thousand, four hundred fifty-two".