15453432440 has 32 divisors (see below), whose sum is σ = 34829509680. Its totient is φ = 6170833152.

The previous prime is 15453432419. The next prime is 15453432457. The reversal of 15453432440 is 4423435451.

It is a self number, because there is not a number n which added to its sum of digits gives 15453432440.

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, 305597 + ... + 352556.

Almost surely, 2^15453432440 is an apocalyptic number.

15453432440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15453432440 is an abundant number, since it is smaller than the sum of its proper divisors (19376077240).

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

15453432440 is a wasteful number, since it uses less digits than its factorization.

15453432440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658751 (or 658747 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 15453432440 its reverse (4423435451), we get a palindrome (19876867891).

The spelling of 15453432440 in words is "fifteen billion, four hundred fifty-three million, four hundred thirty-two thousand, four hundred forty".