7881097761 has 12 divisors (see below), whose sum is σ = 11982955920. Its totient is φ = 4977535320.

The previous prime is 7881097751. The next prime is 7881097769. The reversal of 7881097761 is 1677901887.

It is not a de Polignac number, because 7881097761 - 2⁹ = 7881097249 is a prime.

It is a super-2 number, since 2×7881097761² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7881097698 and 7881097707.

It is not an unprimeable number, because it can be changed into a prime (7881097769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23043975 + ... + 23044316.

It is an arithmetic number, because the mean of its divisors is an integer number (998579660).

Almost surely, 2^7881097761 is an apocalyptic number.

It is an amenable number.

7881097761 is a deficient number, since it is larger than the sum of its proper divisors (4101858159).

7881097761 is a wasteful number, since it uses less digits than its factorization.

7881097761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46088316 (or 46088313 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 54.

The square root of 7881097761 is about 88775.5470892745. The cubic root of 7881097761 is about 1990.0419813034.

The spelling of 7881097761 in words is "seven billion, eight hundred eighty-one million, ninety-seven thousand, seven hundred sixty-one".