15493928066 has 8 divisors (see below), whose sum is σ = 23305631040. Its totient is φ = 7725384388.

The previous prime is 15493928063. The next prime is 15493928071. The reversal of 15493928066 is 66082939451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 15493927999 and 15493928017.

It is not an unprimeable number, because it can be changed into a prime (15493928063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10788926 + ... + 10790361.

It is an arithmetic number, because the mean of its divisors is an integer number (2913203880).

Almost surely, 2^15493928066 is an apocalyptic number.

15493928066 is a deficient number, since it is larger than the sum of its proper divisors (7811702974).

15493928066 is a wasteful number, since it uses less digits than its factorization.

15493928066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21579648.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 15493928066 in words is "fifteen billion, four hundred ninety-three million, nine hundred twenty-eight thousand, sixty-six".