15640142266 has 32 divisors (see below), whose sum is σ = 26903715840. Its totient is φ = 6679950576.

The previous prime is 15640142257. The next prime is 15640142281. The reversal of 15640142266 is 66224104651.

15640142266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×15640142266² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8200485 + ... + 8202391.

It is an arithmetic number, because the mean of its divisors is an integer number (840741120).

Almost surely, 2^15640142266 is an apocalyptic number.

15640142266 is a deficient number, since it is larger than the sum of its proper divisors (11263573574).

15640142266 is a wasteful number, since it uses less digits than its factorization.

15640142266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3618.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 15640142266 in words is "fifteen billion, six hundred forty million, one hundred forty-two thousand, two hundred sixty-six".