612478320090 has 64 divisors (see below), whose sum is σ = 1809166738176. Its totient is φ = 129226194432.

The previous prime is 612478320089. The next prime is 612478320119. The reversal of 612478320090 is 90023874216.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112172787 + ... + 112178246.

It is an arithmetic number, because the mean of its divisors is an integer number (28268230284).

Almost surely, 2^612478320090 is an apocalyptic number.

612478320090 is an abundant number, since it is smaller than the sum of its proper divisors (1196688418086).

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

612478320090 is a wasteful number, since it uses less digits than its factorization.

612478320090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224351063.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 612478320090 in words is "six hundred twelve billion, four hundred seventy-eight million, three hundred twenty thousand, ninety".