7772860881 has 12 divisors (see below), whose sum is σ = 11231371008. Its totient is φ = 5180104824.

The previous prime is 7772860871. The next prime is 7772860891. The reversal of 7772860881 is 1880682777.

7772860881 is a `hidden beast` number, since 7 + 7 + 7 + 28 + 608 + 8 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (7772860871) and next prime (7772860891).

It is not a de Polignac number, because 7772860881 - 2¹¹ = 7772858833 is a prime.

It is a super-2 number, since 2×7772860881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7772860801) 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, 122625 + ... + 174878.

It is an arithmetic number, because the mean of its divisors is an integer number (935947584).

Almost surely, 2^7772860881 is an apocalyptic number.

It is an amenable number.

7772860881 is a deficient number, since it is larger than the sum of its proper divisors (3458510127).

7772860881 is a wasteful number, since it uses less digits than its factorization.

7772860881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300412 (or 300409 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 54.

The square root of 7772860881 is about 88163.8297772959. The cubic root of 7772860881 is about 1980.8897202818.

The spelling of 7772860881 in words is "seven billion, seven hundred seventy-two million, eight hundred sixty thousand, eight hundred eighty-one".