7730426655 has 48 divisors (see below), whose sum is σ = 15332728320. Its totient is φ = 3529497024.

The previous prime is 7730426653. The next prime is 7730426689. The reversal of 7730426655 is 5566240377.

It is not a de Polignac number, because 7730426655 - 2¹ = 7730426653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 7730426655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7730426653) 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 47 ways as a sum of consecutive naturals, for example, 244336 + ... + 274154.

It is an arithmetic number, because the mean of its divisors is an integer number (319431840).

Almost surely, 2^7730426655 is an apocalyptic number.

7730426655 is a deficient number, since it is larger than the sum of its proper divisors (7602301665).

7730426655 is a wasteful number, since it uses less digits than its factorization.

7730426655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30660 (or 30657 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 45.

The square root of 7730426655 is about 87922.8448982402. The cubic root of 7730426655 is about 1977.2783964930.

The spelling of 7730426655 in words is "seven billion, seven hundred thirty million, four hundred twenty-six thousand, six hundred fifty-five".