7781963132 has 12 divisors (see below), whose sum is σ = 13771452240. Its totient is φ = 3847262496.

The previous prime is 7781963107. The next prime is 7781963159. The reversal of 7781963132 is 2313691877.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10929368 + ... + 10930079.

It is an arithmetic number, because the mean of its divisors is an integer number (1147621020).

Almost surely, 2^7781963132 is an apocalyptic number.

It is an amenable number.

7781963132 is a deficient number, since it is larger than the sum of its proper divisors (5989489108).

7781963132 is a wasteful number, since it uses less digits than its factorization.

7781963132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21859540 (or 21859538 counting only the distinct ones).

The product of its digits is 381024, while the sum is 47.

The square root of 7781963132 is about 88215.4359055149. The cubic root of 7781963132 is about 1981.6626455571.

The spelling of 7781963132 in words is "seven billion, seven hundred eighty-one million, nine hundred sixty-three thousand, one hundred thirty-two".