7665555442 has 32 divisors (see below), whose sum is σ = 13000849920. Its totient is φ = 3370563840.

The previous prime is 7665555431. The next prime is 7665555461. The reversal of 7665555442 is 2445555667.

It is a nialpdrome in base 10.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 94828 + ... + 155959.

It is an arithmetic number, because the mean of its divisors is an integer number (406276560).

Almost surely, 2^7665555442 is an apocalyptic number.

7665555442 is a deficient number, since it is larger than the sum of its proper divisors (5335294478).

7665555442 is a wasteful number, since it uses less digits than its factorization.

7665555442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250866.

The product of its digits is 5040000, while the sum is 49.

The square root of 7665555442 is about 87553.1578071288. The cubic root of 7665555442 is about 1971.7319615409.

The spelling of 7665555442 in words is "seven billion, six hundred sixty-five million, five hundred fifty-five thousand, four hundred forty-two".