7713948881 has 4 divisors (see below), whose sum is σ = 7765720500. Its totient is φ = 7662177264.

The previous prime is 7713948839. The next prime is 7713948889. The reversal of 7713948881 is 1888493177.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1268428225 + 6445520656 = 35615^2 + 80284^2 .

It is a cyclic number.

It is not a de Polignac number, because 7713948881 - 2¹⁸ = 7713686737 is a prime.

It is a super-2 number, since 2×7713948881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7713948889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25885586 + ... + 25885883.

It is an arithmetic number, because the mean of its divisors is an integer number (1941430125).

Almost surely, 2^7713948881 is an apocalyptic number.

It is an amenable number.

7713948881 is a deficient number, since it is larger than the sum of its proper divisors (51771619).

7713948881 is a wasteful number, since it uses less digits than its factorization.

7713948881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51771618.

The product of its digits is 2709504, while the sum is 56.

The square root of 7713948881 is about 87829.0890366056. The cubic root of 7713948881 is about 1975.8725093027.

The spelling of 7713948881 in words is "seven billion, seven hundred thirteen million, nine hundred forty-eight thousand, eight hundred eighty-one".