15400244012 has 12 divisors (see below), whose sum is σ = 26951473416. Its totient is φ = 7699823040.

The previous prime is 15400244009. The next prime is 15400244089. The reversal of 15400244012 is 21044200451.

It is a super-2 number, since 2×15400244012² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74087 + ... + 190497.

It is an arithmetic number, because the mean of its divisors is an integer number (2245956118).

Almost surely, 2^15400244012 is an apocalyptic number.

It is an amenable number.

15400244012 is a deficient number, since it is larger than the sum of its proper divisors (11551229404).

15400244012 is a wasteful number, since it uses less digits than its factorization.

15400244012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149488 (or 149486 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 15400244012 its reverse (21044200451), we get a palindrome (36444444463).

The spelling of 15400244012 in words is "fifteen billion, four hundred million, two hundred forty-four thousand, twelve".