7881332505 has 32 divisors (see below), whose sum is σ = 12722531328. Its totient is φ = 4166040000.

The previous prime is 7881332497. The next prime is 7881332509. The reversal of 7881332505 is 5052331887.

It is not a de Polignac number, because 7881332505 - 2³ = 7881332497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7881332509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1054030 + ... + 1061480.

It is an arithmetic number, because the mean of its divisors is an integer number (397579104).

Almost surely, 2^7881332505 is an apocalyptic number.

It is an amenable number.

7881332505 is a deficient number, since it is larger than the sum of its proper divisors (4841198823).

7881332505 is a wasteful number, since it uses less digits than its factorization.

7881332505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8077.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 7881332505 is about 88776.8692002596. The cubic root of 7881332505 is about 1990.0617393705.

The spelling of 7881332505 in words is "seven billion, eight hundred eighty-one million, three hundred thirty-two thousand, five hundred five".