7764642472 has 16 divisors (see below), whose sum is σ = 14560671060. Its totient is φ = 3881796864.

The previous prime is 7764642469. The next prime is 7764642491. The reversal of 7764642472 is 2742464677.

It can be written as a sum of positive squares in 2 ways, for example, as 7490210116 + 274432356 = 86546^2 + 16566^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1408 + ... + 124624.

Almost surely, 2^7764642472 is an apocalyptic number.

It is an amenable number.

7764642472 is a deficient number, since it is larger than the sum of its proper divisors (6796028588).

7764642472 is a wasteful number, since it uses less digits than its factorization.

7764642472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131100 (or 131096 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 49.

The square root of 7764642472 is about 88117.2087165725. The cubic root of 7764642472 is about 1980.1913286526.

The spelling of 7764642472 in words is "seven billion, seven hundred sixty-four million, six hundred forty-two thousand, four hundred seventy-two".