12266861542 has 16 divisors (see below), whose sum is σ = 19872819792. Its totient is φ = 5645308320.

The previous prime is 12266861449. The next prime is 12266861573. The reversal of 12266861542 is 24516866221.

It is a congruent number.

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, 670809 + ... + 688852.

It is an arithmetic number, because the mean of its divisors is an integer number (1242051237).

Almost surely, 2^12266861542 is an apocalyptic number.

12266861542 is a deficient number, since it is larger than the sum of its proper divisors (7605958250).

12266861542 is a wasteful number, since it uses less digits than its factorization.

12266861542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360023.

The product of its digits is 276480, while the sum is 43.

The spelling of 12266861542 in words is "twelve billion, two hundred sixty-six million, eight hundred sixty-one thousand, five hundred forty-two".