15421346802 has 24 divisors (see below), whose sum is σ = 33743743020. Its totient is φ = 5089552800.

The previous prime is 15421346761. The next prime is 15421346887. The reversal of 15421346802 is 20864312451.

It is a happy number.

15421346802 is a `hidden beast` number, since 1 + 542 + 1 + 34 + 6 + 80 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13980461121 + 1440885681 = 118239^2 + 37959^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4239477 + ... + 4243112.

Almost surely, 2^15421346802 is an apocalyptic number.

15421346802 is an abundant number, since it is smaller than the sum of its proper divisors (18322396218).

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

15421346802 is a wasteful number, since it uses less digits than its factorization.

15421346802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8482698 (or 8482695 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 15421346802 in words is "fifteen billion, four hundred twenty-one million, three hundred forty-six thousand, eight hundred two".