612478320020 has 48 divisors (see below), whose sum is σ = 1470041733888. Its totient is φ = 209979171840.

The previous prime is 612478319989. The next prime is 612478320061. The reversal of 612478320020 is 20023874216.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2203025 + ... + 2465415.

It is an arithmetic number, because the mean of its divisors is an integer number (30625869456).

Almost surely, 2^612478320020 is an apocalyptic number.

It is an amenable number.

612478320020 is an abundant number, since it is smaller than the sum of its proper divisors (857563413868).

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

612478320020 is a wasteful number, since it uses less digits than its factorization.

612478320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279080 (or 279078 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 612478320020 in words is "six hundred twelve billion, four hundred seventy-eight million, three hundred twenty thousand, twenty".