7961887896 has 32 divisors (see below), whose sum is σ = 19908778560. Its totient is φ = 2653421472.

The previous prime is 7961887841. The next prime is 7961887931. The reversal of 7961887896 is 6987881697.

It is a self number, because there is not a number n which added to its sum of digits gives 7961887896.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96591 + ... + 158913.

It is an arithmetic number, because the mean of its divisors is an integer number (622149330).

Almost surely, 2^7961887896 is an apocalyptic number.

It is an amenable number.

7961887896 is an abundant number, since it is smaller than the sum of its proper divisors (11946890664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7961887896 is a wasteful number, since it uses less digits than its factorization.

7961887896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67655 (or 67651 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 69.

The square root of 7961887896 is about 89229.4116085050. The cubic root of 7961887896 is about 1996.8189344267.

The spelling of 7961887896 in words is "seven billion, nine hundred sixty-one million, eight hundred eighty-seven thousand, eight hundred ninety-six".