7781488963 has 12 divisors (see below), whose sum is σ = 8114478240. Its totient is φ = 7461285840.

The previous prime is 7781488927. The next prime is 7781488997. The reversal of 7781488963 is 3698841877.

It is not a de Polignac number, because 7781488963 - 2¹⁷ = 7781357891 is a prime.

It is a super-3 number, since 3×7781488963³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7781488903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67606 + ... + 141892.

It is an arithmetic number, because the mean of its divisors is an integer number (676206520).

Almost surely, 2^7781488963 is an apocalyptic number.

7781488963 is a deficient number, since it is larger than the sum of its proper divisors (332989277).

7781488963 is a wasteful number, since it uses less digits than its factorization.

7781488963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74458 (or 74427 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 61.

The square root of 7781488963 is about 88212.7483020453. The cubic root of 7781488963 is about 1981.6223959840.

The spelling of 7781488963 in words is "seven billion, seven hundred eighty-one million, four hundred eighty-eight thousand, nine hundred sixty-three".