41778121768 has 8 divisors (see below), whose sum is σ = 78333978330. Its totient is φ = 20889060880.

The previous prime is 41778121717. The next prime is 41778121769. The reversal of 41778121768 is 86712187714.

It can be written as a sum of positive squares in only one way, i.e., 35818590564 + 5959531204 = 189258^2 + 77198^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×41778121768² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (41778121769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2611132603 + ... + 2611132618.

Almost surely, 2^41778121768 is an apocalyptic number.

It is an amenable number.

41778121768 is a deficient number, since it is larger than the sum of its proper divisors (36555856562).

41778121768 is a wasteful number, since it uses less digits than its factorization.

41778121768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5222265227 (or 5222265223 counting only the distinct ones).

The product of its digits is 1053696, while the sum is 52.

The spelling of 41778121768 in words is "forty-one billion, seven hundred seventy-eight million, one hundred twenty-one thousand, seven hundred sixty-eight".