7788228877 has 48 divisors (see below), whose sum is σ = 9762298560. Its totient is φ = 6108480000.

The previous prime is 7788228829. The next prime is 7788228883.

7788228877 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-7788228877 is a prime.

It is a super-2 number, since 2×7788228877² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7788226877) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27715977 + ... + 27716257.

It is an arithmetic number, because the mean of its divisors is an integer number (203381220).

Almost surely, 2^7788228877 is an apocalyptic number.

It is an amenable number.

7788228877 is a deficient number, since it is larger than the sum of its proper divisors (1974069683).

7788228877 is a wasteful number, since it uses less digits than its factorization.

7788228877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526 (or 425 counting only the distinct ones).

The product of its digits is 39337984, while the sum is 64.

The square root of 7788228877 is about 88250.9426408580. The cubic root of 7788228877 is about 1982.1943563706.

The spelling of 7788228877 in words is "seven billion, seven hundred eighty-eight million, two hundred twenty-eight thousand, eight hundred seventy-seven".