15912000020002 has 8 divisors (see below), whose sum is σ = 23873192125596. Its totient is φ = 7954269311472.

The previous prime is 15912000019991. The next prime is 15912000020017. The reversal of 15912000020002 is 20002000021951.

It can be written as a sum of positive squares in 2 ways, for example, as 14434216979121 + 1477783040881 = 3799239^2 + 1215641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865337773 + ... + 865356160.

Almost surely, 2^{15912000020002} is an apocalyptic number.

15912000020002 is a deficient number, since it is larger than the sum of its proper divisors (7961192105594).

15912000020002 is a wasteful number, since it uses less digits than its factorization.

15912000020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730698532.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 15912000020002 its reverse (20002000021951), we get a palindrome (35914000041953).

The spelling of 15912000020002 in words is "fifteen trillion, nine hundred twelve billion, twenty thousand, two".