612345454545356 has 96 divisors (see below), whose sum is σ = 1286861536558080. Its totient is φ = 249407988883200.

The previous prime is 612345454545287. The next prime is 612345454545371. The reversal of 612345454545356 is 653545454543216.

It is a super-2 number, since 2×612345454545356² (a number of 30 digits) contains 22 as substring.

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, 26677211 + ... + 44004141.

It is an arithmetic number, because the mean of its divisors is an integer number (13404807672480).

Almost surely, 2^{612345454545356} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612345454545356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (643430768279040).

612345454545356 is an abundant number, since it is smaller than the sum of its proper divisors (674516082012724).

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

612345454545356 is a wasteful number, since it uses less digits than its factorization.

612345454545356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17327655 (or 17327653 counting only the distinct ones).

The product of its digits is 518400000, while the sum is 62.

The spelling of 612345454545356 in words is "six hundred twelve trillion, three hundred forty-five billion, four hundred fifty-four million, five hundred forty-five thousand, three hundred fifty-six".