7785540455876 has 12 divisors (see below), whose sum is σ = 13645308050220. Its totient is φ = 3886881012960.

The previous prime is 7785540455821. The next prime is 7785540455879. The reversal of 7785540455876 is 6785540455877.

It can be written as a sum of positive squares in 2 ways, for example, as 6525368070400 + 1260172385476 = 2554480^2 + 1122574^2 .

It is a super-2 number, since 2×7785540455876² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7785540455879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1472300771 + ... + 1472306058.

It is an arithmetic number, because the mean of its divisors is an integer number (1137109004185).

Almost surely, 2^{7785540455876} is an apocalyptic number.

It is an amenable number.

7785540455876 is a deficient number, since it is larger than the sum of its proper divisors (5859767594344).

7785540455876 is a wasteful number, since it uses less digits than its factorization.

7785540455876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944607494 (or 2944607492 counting only the distinct ones).

The product of its (nonzero) digits is 1317120000, while the sum is 71.

Subtracting from 7785540455876 its reverse (6785540455877), we obtain a palindrome (999999999999).

The spelling of 7785540455876 in words is "seven trillion, seven hundred eighty-five billion, five hundred forty million, four hundred fifty-five thousand, eight hundred seventy-six".