15432142646 has 16 divisors (see below), whose sum is σ = 24443426160. Its totient is φ = 7286896800.

The previous prime is 15432142639. The next prime is 15432142711. The reversal of 15432142646 is 64624123451.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628505 + ... + 652596.

It is an arithmetic number, because the mean of its divisors is an integer number (1527714135).

Almost surely, 2^15432142646 is an apocalyptic number.

15432142646 is a deficient number, since it is larger than the sum of its proper divisors (9011283514).

15432142646 is a wasteful number, since it uses less digits than its factorization.

15432142646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281439.

The product of its digits is 138240, while the sum is 38.

The spelling of 15432142646 in words is "fifteen billion, four hundred thirty-two million, one hundred forty-two thousand, six hundred forty-six".