7681045881 has 8 divisors (see below), whose sum is σ = 10245067264. Its totient is φ = 5118860880.

The previous prime is 7681045873. The next prime is 7681045949. The reversal of 7681045881 is 1885401867.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7681045881 - 2³ = 7681045873 is a prime.

It is a super-2 number, since 2×7681045881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7681045881.

It is not an unprimeable number, because it can be changed into a prime (7681045481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449305 + ... + 466086.

It is an arithmetic number, because the mean of its divisors is an integer number (1280633408).

Almost surely, 2^7681045881 is an apocalyptic number.

It is an amenable number.

7681045881 is a deficient number, since it is larger than the sum of its proper divisors (2564021383).

7681045881 is a wasteful number, since it uses less digits than its factorization.

7681045881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918191.

The product of its (nonzero) digits is 430080, while the sum is 48.

The square root of 7681045881 is about 87641.5762124347. The cubic root of 7681045881 is about 1973.0592166613.

The spelling of 7681045881 in words is "seven billion, six hundred eighty-one million, forty-five thousand, eight hundred eighty-one".