7430864212991 has 4 divisors (see below), whose sum is σ = 7430882500752. Its totient is φ = 7430845925232.

The previous prime is 7430864212931. The next prime is 7430864213021. The reversal of 7430864212991 is 1992124680347.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7430864212991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7430864212901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8520206 + ... + 9351771.

It is an arithmetic number, because the mean of its divisors is an integer number (1857720625188).

Almost surely, 2^{7430864212991} is an apocalyptic number.

7430864212991 is a deficient number, since it is larger than the sum of its proper divisors (18287761).

7430864212991 is a wasteful number, since it uses less digits than its factorization.

7430864212991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18287760.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 7430864212991 in words is "seven trillion, four hundred thirty billion, eight hundred sixty-four million, two hundred twelve thousand, nine hundred ninety-one".