15012042144666 has 24 divisors (see below), whose sum is σ = 34925975602560. Its totient is φ = 4289154898392.

The previous prime is 15012042144647. The next prime is 15012042144679. The reversal of 15012042144666 is 66644124021051.

It is a happy number.

It is a super-2 number, since 2×15012042144666² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25530683626 + ... + 25530684213.

It is an arithmetic number, because the mean of its divisors is an integer number (1455248983440).

Almost surely, 2^{15012042144666} is an apocalyptic number.

15012042144666 is an abundant number, since it is smaller than the sum of its proper divisors (19913933457894).

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

15012042144666 is a wasteful number, since it uses less digits than its factorization.

15012042144666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51061367858 (or 51061367851 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 15012042144666 in words is "fifteen trillion, twelve billion, forty-two million, one hundred forty-four thousand, six hundred sixty-six".