7774941664 has 48 divisors (see below), whose sum is σ = 18414345600. Its totient is φ = 3156741504.

The previous prime is 7774941661. The next prime is 7774941667. The reversal of 7774941664 is 4661494777.

It is an interprime number because it is at equal distance from previous prime (7774941661) and next prime (7774941667).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7774941661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 909154 + ... + 917665.

It is an arithmetic number, because the mean of its divisors is an integer number (383632200).

Almost surely, 2^7774941664 is an apocalyptic number.

It is an amenable number.

7774941664 is an abundant number, since it is smaller than the sum of its proper divisors (10639403936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7774941664 is a wasteful number, since it uses less digits than its factorization.

7774941664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826855 (or 1826847 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 55.

The square root of 7774941664 is about 88175.6296490136. The cubic root of 7774941664 is about 1981.0664648967.

The spelling of 7774941664 in words is "seven billion, seven hundred seventy-four million, nine hundred forty-one thousand, six hundred sixty-four".