15442540223 has 16 divisors (see below), whose sum is σ = 18452460960. Its totient is φ = 12757248000.

The previous prime is 15442540207. The next prime is 15442540237. The reversal of 15442540223 is 32204524451.

It is a cyclic number.

It is not a de Polignac number, because 15442540223 - 2⁴ = 15442540207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15442540223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15442540273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1418378 + ... + 1429223.

It is an arithmetic number, because the mean of its divisors is an integer number (1153278810).

Almost surely, 2^15442540223 is an apocalyptic number.

15442540223 is a deficient number, since it is larger than the sum of its proper divisors (3009920737).

15442540223 is a wasteful number, since it uses less digits than its factorization.

15442540223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847658.

The product of its (nonzero) digits is 38400, while the sum is 32.

The spelling of 15442540223 in words is "fifteen billion, four hundred forty-two million, five hundred forty thousand, two hundred twenty-three".