7793728551 has 48 divisors (see below), whose sum is σ = 13362306048. Its totient is φ = 4446900000.

The previous prime is 7793728463. The next prime is 7793728559. The reversal of 7793728551 is 1558273977.

It is a happy number.

It is not a de Polignac number, because 7793728551 - 2⁹ = 7793728039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7793728559) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1274401 + ... + 1280501.

It is an arithmetic number, because the mean of its divisors is an integer number (278381376).

Almost surely, 2^7793728551 is an apocalyptic number.

7793728551 is a deficient number, since it is larger than the sum of its proper divisors (5568577497).

7793728551 is an equidigital number, since it uses as much as digits as its factorization.

7793728551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6874 (or 6862 counting only the distinct ones).

The product of its digits is 3704400, while the sum is 54.

The square root of 7793728551 is about 88282.0964352343. The cubic root of 7793728551 is about 1982.6608234764.

The spelling of 7793728551 in words is "seven billion, seven hundred ninety-three million, seven hundred twenty-eight thousand, five hundred fifty-one".