7894055505 has 32 divisors (see below), whose sum is σ = 14447913984. Its totient is φ = 3605443776.

The previous prime is 7894055501. The next prime is 7894055537. The reversal of 7894055505 is 5055504987.

It is a happy number.

It is not a de Polignac number, because 7894055505 - 2² = 7894055501 is a prime.

It is a super-2 number, since 2×7894055505² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7894055501) 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 31 ways as a sum of consecutive naturals, for example, 84442 + ... + 151388.

It is an arithmetic number, because the mean of its divisors is an integer number (451497312).

Almost surely, 2^7894055505 is an apocalyptic number.

It is an amenable number.

7894055505 is a deficient number, since it is larger than the sum of its proper divisors (6553858479).

7894055505 is a wasteful number, since it uses less digits than its factorization.

7894055505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68085.

The product of its (nonzero) digits is 1260000, while the sum is 48.

The square root of 7894055505 is about 88848.4974830751. The cubic root of 7894055505 is about 1991.1320297506.

The spelling of 7894055505 in words is "seven billion, eight hundred ninety-four million, fifty-five thousand, five hundred five".