15040315012 has 18 divisors (see below), whose sum is σ = 27196996974. Its totient is φ = 7277569920.

The previous prime is 15040315009. The next prime is 15040315019. The reversal of 15040315012 is 21051304051.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13113456196 + 1926858816 = 114514^2 + 43896^2 .

It is a super-2 number, since 2×15040315012² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15040315019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1952493 + ... + 1960180.

Almost surely, 2^15040315012 is an apocalyptic number.

It is an amenable number.

15040315012 is a deficient number, since it is larger than the sum of its proper divisors (12156681962).

15040315012 is a wasteful number, since it uses less digits than its factorization.

15040315012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3912739 (or 3912706 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 15040315012 its reverse (21051304051), we get a palindrome (36091619063).

The spelling of 15040315012 in words is "fifteen billion, forty million, three hundred fifteen thousand, twelve".