15532221542 has 4 divisors (see below), whose sum is σ = 23298332316. Its totient is φ = 7766110770.

The previous prime is 15532221541. The next prime is 15532221557. The reversal of 15532221542 is 24512223551.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 15532221499 and 15532221508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15532221541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3883055384 + ... + 3883055387.

It is an arithmetic number, because the mean of its divisors is an integer number (5824583079).

Almost surely, 2^15532221542 is an apocalyptic number.

15532221542 is a deficient number, since it is larger than the sum of its proper divisors (7766110774).

15532221542 is an equidigital number, since it uses as much as digits as its factorization.

15532221542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7766110773.

The product of its digits is 24000, while the sum is 32.

The spelling of 15532221542 in words is "fifteen billion, five hundred thirty-two million, two hundred twenty-one thousand, five hundred forty-two".