15448952642 has 18 divisors (see below), whose sum is σ = 23351170899. Its totient is φ = 7665678580.

The previous prime is 15448952633. The next prime is 15448952681. The reversal of 15448952642 is 24625984451.

It can be written as a sum of positive squares in only one way, i.e., 7724476321 + 7724476321 = 87889^2 + 87889^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=87889.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 31464017 + ... + 31464507.

Almost surely, 2^15448952642 is an apocalyptic number.

15448952642 is a deficient number, since it is larger than the sum of its proper divisors (7902218257).

15448952642 is an frugal number, since it uses more digits than its factorization.

15448952642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342 (or 672 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 50.

Multiplying 15448952642 by its sum of digits (50), we get a square (772447632100 = 878890²).

The spelling of 15448952642 in words is "fifteen billion, four hundred forty-eight million, nine hundred fifty-two thousand, six hundred forty-two".