15442002012 has 96 divisors (see below), whose sum is σ = 39295065600. Its totient is φ = 4701134592.

The previous prime is 15442001963. The next prime is 15442002053. The reversal of 15442002012 is 21020024451.

It is a super-2 number, since 2×15442002012² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15442002012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5797393 + ... + 5800055.

It is an arithmetic number, because the mean of its divisors is an integer number (409323600).

Almost surely, 2^15442002012 is an apocalyptic number.

15442002012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15442002012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19647532800).

15442002012 is an abundant number, since it is smaller than the sum of its proper divisors (23853063588).

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

15442002012 is a wasteful number, since it uses less digits than its factorization.

15442002012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595 (or 3593 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 15442002012 its reverse (21020024451), we get a palindrome (36462026463).

The spelling of 15442002012 in words is "fifteen billion, four hundred forty-two million, two thousand, twelve".