7713280881 has 12 divisors (see below), whose sum is σ = 11162715408. Its totient is φ = 5132352024.

The previous prime is 7713280879. The next prime is 7713280901. The reversal of 7713280881 is 1880823177.

It is not a de Polignac number, because 7713280881 - 2¹ = 7713280879 is a prime.

It is a super-2 number, since 2×7713280881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7713280811) 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, 814635 + ... + 824048.

It is an arithmetic number, because the mean of its divisors is an integer number (930226284).

Almost surely, 2^7713280881 is an apocalyptic number.

It is an amenable number.

7713280881 is a deficient number, since it is larger than the sum of its proper divisors (3449434527).

7713280881 is a wasteful number, since it uses less digits than its factorization.

7713280881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639212 (or 1639209 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 7713280881 is about 87825.2861139661. The cubic root of 7713280881 is about 1975.8154731915.

The spelling of 7713280881 in words is "seven billion, seven hundred thirteen million, two hundred eighty thousand, eight hundred eighty-one".