7730742251 has 8 divisors (see below), whose sum is σ = 8009222880. Its totient is φ = 7453055232.

The previous prime is 7730742247. The next prime is 7730742281. The reversal of 7730742251 is 1522470377.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7730742251 - 2² = 7730742247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7730742281) 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 7 ways as a sum of consecutive naturals, for example, 178535 + ... + 217568.

It is an arithmetic number, because the mean of its divisors is an integer number (1001152860).

Almost surely, 2^7730742251 is an apocalyptic number.

7730742251 is a deficient number, since it is larger than the sum of its proper divisors (278480629).

7730742251 is a wasteful number, since it uses less digits than its factorization.

7730742251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396805.

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 7730742251 is about 87924.6396125682. The cubic root of 7730742251 is about 1977.3053037039.

The spelling of 7730742251 in words is "seven billion, seven hundred thirty million, seven hundred forty-two thousand, two hundred fifty-one".