15040140412 has 24 divisors (see below), whose sum is σ = 28750205232. Its totient is φ = 6827568000.

The previous prime is 15040140391. The next prime is 15040140497. The reversal of 15040140412 is 21404104051.

It is a super-2 number, since 2×15040140412² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 187089 + ... + 255112.

It is an arithmetic number, because the mean of its divisors is an integer number (1197925218).

Almost surely, 2^15040140412 is an apocalyptic number.

It is an amenable number.

15040140412 is a deficient number, since it is larger than the sum of its proper divisors (13710064820).

15040140412 is a wasteful number, since it uses less digits than its factorization.

15040140412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442989 (or 442987 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 15040140412 its reverse (21404104051), we get a palindrome (36444244463).

The spelling of 15040140412 in words is "fifteen billion, forty million, one hundred forty thousand, four hundred twelve".