15422443540 has 24 divisors (see below), whose sum is σ = 37013864832. Its totient is φ = 5287694880.

The previous prime is 15422443493. The next prime is 15422443541. The reversal of 15422443540 is 4534422451.

It is a junction number, because it is equal to n+sod(n) for n = 15422443496 and 15422443505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15422443541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55080016 + ... + 55080295.

It is an arithmetic number, because the mean of its divisors is an integer number (1542244368).

Almost surely, 2^15422443540 is an apocalyptic number.

15422443540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15422443540 is an abundant number, since it is smaller than the sum of its proper divisors (21591421292).

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

15422443540 is a wasteful number, since it uses less digits than its factorization.

15422443540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110160327 (or 110160325 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 15422443540 its reverse (4534422451), we get a palindrome (19956865991).

The spelling of 15422443540 in words is "fifteen billion, four hundred twenty-two million, four hundred forty-three thousand, five hundred forty".