612478319988 has 24 divisors (see below), whose sum is σ = 1504332716320. Its totient is φ = 193414206240.

The previous prime is 612478319917. The next prime is 612478319989. The reversal of 612478319988 is 889913874216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612478319989) 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, 1343153983 + ... + 1343154438.

Almost surely, 2^612478319988 is an apocalyptic number.

It is an amenable number.

612478319988 is an abundant number, since it is smaller than the sum of its proper divisors (891854396332).

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

612478319988 is a wasteful number, since it uses less digits than its factorization.

612478319988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686308447 (or 2686308445 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 66.

The spelling of 612478319988 in words is "six hundred twelve billion, four hundred seventy-eight million, three hundred nineteen thousand, nine hundred eighty-eight".