15421345268 has 36 divisors (see below), whose sum is σ = 31622657220. Its totient is φ = 6560894592.

The previous prime is 15421345267. The next prime is 15421345271. The reversal of 15421345268 is 86254312451.

It can be written as a sum of positive squares in 2 ways, for example, as 8649372004 + 6771973264 = 93002^2 + 82292^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15421345267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 260303 + ... + 314006.

It is an arithmetic number, because the mean of its divisors is an integer number (878407145).

Almost surely, 2^15421345268 is an apocalyptic number.

It is an amenable number.

15421345268 is an abundant number, since it is smaller than the sum of its proper divisors (16201311952).

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

15421345268 is a wasteful number, since it uses less digits than its factorization.

15421345268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574464 (or 574455 counting only the distinct ones).

The product of its digits is 230400, while the sum is 41.

The spelling of 15421345268 in words is "fifteen billion, four hundred twenty-one million, three hundred forty-five thousand, two hundred sixty-eight".