15040231640 has 32 divisors (see below), whose sum is σ = 38674882080. Its totient is φ = 5156650752.

The previous prime is 15040231637. The next prime is 15040231643. The reversal of 15040231640 is 4613204051.

15040231640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15040231637) and next prime (15040231643).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15040231643) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 26857277 + ... + 26857836.

It is an arithmetic number, because the mean of its divisors is an integer number (1208590065).

Almost surely, 2^15040231640 is an apocalyptic number.

15040231640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15040231640 is an abundant number, since it is smaller than the sum of its proper divisors (23634650440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15040231640 is a wasteful number, since it uses less digits than its factorization.

15040231640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53715131 (or 53715127 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 15040231640 its reverse (4613204051), we get a palindrome (19653435691).

The spelling of 15040231640 in words is "fifteen billion, forty million, two hundred thirty-one thousand, six hundred forty".