615425566165660 has 12 divisors (see below), whose sum is σ = 1292393688947928. Its totient is φ = 246170226466256.

The previous prime is 615425566165651. The next prime is 615425566165699. The reversal of 615425566165660 is 66561665524516.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 615425566165592 and 615425566165601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15385639154122 + ... + 15385639154161.

It is an arithmetic number, because the mean of its divisors is an integer number (107699474078994).

Almost surely, 2^{615425566165660} is an apocalyptic number.

It is an amenable number.

615425566165660 is an abundant number, since it is smaller than the sum of its proper divisors (676968122782268).

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

615425566165660 is a wasteful number, since it uses less digits than its factorization.

615425566165660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30771278308292 (or 30771278308290 counting only the distinct ones).

The product of its (nonzero) digits is 233280000, while the sum is 64.

The spelling of 615425566165660 in words is "six hundred fifteen trillion, four hundred twenty-five billion, five hundred sixty-six million, one hundred sixty-five thousand, six hundred sixty".