60666565815 has 16 divisors (see below), whose sum is σ = 107851672800. Its totient is φ = 32355501696.

The previous prime is 60666565807. The next prime is 60666565853. The reversal of 60666565815 is 51856566606.

It is a happy number.

It is not a de Polignac number, because 60666565815 - 2³ = 60666565807 is a prime.

It is a super-2 number, since 2×60666565815² (a number of 22 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, 224690850 + ... + 224691119.

It is an arithmetic number, because the mean of its divisors is an integer number (6740729550).

Almost surely, 2^60666565815 is an apocalyptic number.

60666565815 is a deficient number, since it is larger than the sum of its proper divisors (47185106985).

60666565815 is a wasteful number, since it uses less digits than its factorization.

60666565815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449381983 (or 449381977 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 54.

The spelling of 60666565815 in words is "sixty billion, six hundred sixty-six million, five hundred sixty-five thousand, eight hundred fifteen".