7907850970991 has 2 divisors, whose sum is σ = 7907850970992. Its totient is φ = 7907850970990.

The previous prime is 7907850970973. The next prime is 7907850971021. The reversal of 7907850970991 is 1990790587097.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7907850970991 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7907850970961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3953925485495 + 3953925485496.

It is an arithmetic number, because the mean of its divisors is an integer number (3953925485496).

Almost surely, 2^{7907850970991} is an apocalyptic number.

7907850970991 is a deficient number, since it is larger than the sum of its proper divisors (1).

7907850970991 is an equidigital number, since it uses as much as digits as its factorization.

7907850970991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90016920, while the sum is 71.

The spelling of 7907850970991 in words is "seven trillion, nine hundred seven billion, eight hundred fifty million, nine hundred seventy thousand, nine hundred ninety-one".