15666342436 has 24 divisors (see below), whose sum is σ = 27710131904. Its totient is φ = 7749315360.

The previous prime is 15666342413. The next prime is 15666342493. The reversal of 15666342436 is 63424366651.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402031 + ... + 439273.

Almost surely, 2^15666342436 is an apocalyptic number.

It is an amenable number.

15666342436 is a deficient number, since it is larger than the sum of its proper divisors (12043789468).

15666342436 is a wasteful number, since it uses less digits than its factorization.

15666342436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38371 (or 38369 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 46.

The spelling of 15666342436 in words is "fifteen billion, six hundred sixty-six million, three hundred forty-two thousand, four hundred thirty-six".