7899911102002 has 8 divisors (see below), whose sum is σ = 11849912338716. Its totient is φ = 3949940322432.

The previous prime is 7899911101993. The next prime is 7899911102023. The reversal of 7899911102002 is 2002011199987.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5682459531681 + 2217451570321 = 2383791^2 + 1489111^2 .

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, 6954403 + ... + 8010214.

Almost surely, 2^{7899911102002} is an apocalyptic number.

7899911102002 is a deficient number, since it is larger than the sum of its proper divisors (3950001236714).

7899911102002 is a wasteful number, since it uses less digits than its factorization.

7899911102002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15228572.

The product of its (nonzero) digits is 163296, while the sum is 49.

The spelling of 7899911102002 in words is "seven trillion, eight hundred ninety-nine billion, nine hundred eleven million, one hundred two thousand, two".