7899997000001 has 16 divisors (see below), whose sum is σ = 8127734375040. Its totient is φ = 7675462609920.

The previous prime is 7899996999997. The next prime is 7899997000037. The reversal of 7899997000001 is 1000007999987.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7899997000001 - 2² = 7899996999997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7899996999895 and 7899996999904.

It is not an unprimeable number, because it can be changed into a prime (7899997000061) 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, 28055756 + ... + 28335938.

It is an arithmetic number, because the mean of its divisors is an integer number (507983398440).

Almost surely, 2^{7899997000001} is an apocalyptic number.

It is an amenable number.

7899997000001 is a deficient number, since it is larger than the sum of its proper divisors (227737375039).

7899997000001 is a wasteful number, since it uses less digits than its factorization.

7899997000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285896.

The product of its (nonzero) digits is 2571912, while the sum is 59.

The spelling of 7899997000001 in words is "seven trillion, eight hundred ninety-nine billion, nine hundred ninety-seven million, one", and thus it is an aban number.