15500046666 has 16 divisors (see below), whose sum is σ = 33384716064. Its totient is φ = 4769245104.

The previous prime is 15500046641. The next prime is 15500046671. The reversal of 15500046666 is 66664000551.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 99359196 + ... + 99359351.

It is an arithmetic number, because the mean of its divisors is an integer number (2086544754).

Almost surely, 2^15500046666 is an apocalyptic number.

15500046666 is an abundant number, since it is smaller than the sum of its proper divisors (17884669398).

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

15500046666 is a wasteful number, since it uses less digits than its factorization.

15500046666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198718565.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 15500046666 in words is "fifteen billion, five hundred million, forty-six thousand, six hundred sixty-six".