15145870638 has 16 divisors (see below), whose sum is σ = 30294464256. Its totient is φ = 5048169720.

The previous prime is 15145870633. The next prime is 15145870643. The reversal of 15145870638 is 83607854151.

15145870638 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 (15145870633) and next prime (15145870643).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15145870631) 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, 37206 + ... + 177977.

It is an arithmetic number, because the mean of its divisors is an integer number (1893404016).

Almost surely, 2^15145870638 is an apocalyptic number.

15145870638 is an abundant number, since it is smaller than the sum of its proper divisors (15148593618).

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

15145870638 is a wasteful number, since it uses less digits than its factorization.

15145870638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226919.

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 15145870638 in words is "fifteen billion, one hundred forty-five million, eight hundred seventy thousand, six hundred thirty-eight".