7797419991 has 16 divisors (see below), whose sum is σ = 11797516800. Its totient is φ = 5087677464.

The previous prime is 7797419989. The next prime is 7797420023. The reversal of 7797419991 is 1999147977.

It is not a de Polignac number, because 7797419991 - 2¹ = 7797419989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7797419891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3071001 + ... + 3073538.

It is an arithmetic number, because the mean of its divisors is an integer number (737344800).

Almost surely, 2^7797419991 is an apocalyptic number.

7797419991 is a deficient number, since it is larger than the sum of its proper divisors (4000096809).

7797419991 is a wasteful number, since it uses less digits than its factorization.

7797419991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6144595 (or 6144589 counting only the distinct ones).

The product of its digits is 9001692, while the sum is 63.

The square root of 7797419991 is about 88303.0010305426. The cubic root of 7797419991 is about 1982.9737981208.

The spelling of 7797419991 in words is "seven billion, seven hundred ninety-seven million, four hundred nineteen thousand, nine hundred ninety-one".