612516055402478 has 32 divisors (see below), whose sum is σ = 989857698988032. Its totient is φ = 283432422240000.

The previous prime is 612516055402469. The next prime is 612516055402613. The reversal of 612516055402478 is 874204550615216.

It is a happy number.

612516055402478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×612516055402478² (a number of 30 digits) contains 22 as substring.

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, 38959523 + ... + 52372478.

It is an arithmetic number, because the mean of its divisors is an integer number (30933053093376).

Almost surely, 2^{612516055402478} is an apocalyptic number.

612516055402478 is a deficient number, since it is larger than the sum of its proper divisors (377341643585554).

612516055402478 is a wasteful number, since it uses less digits than its factorization.

612516055402478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91336760.

The product of its (nonzero) digits is 16128000, while the sum is 56.

The spelling of 612516055402478 in words is "six hundred twelve trillion, five hundred sixteen billion, fifty-five million, four hundred two thousand, four hundred seventy-eight".