77541580738772 has 6 divisors (see below), whose sum is σ = 135697766292858. Its totient is φ = 38770790369384.

The previous prime is 77541580738753. The next prime is 77541580738781. The reversal of 77541580738772 is 27783708514577.

It can be written as a sum of positive squares in only one way, i.e., 70927456360336 + 6614124378436 = 8421844^2 + 2571794^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77541580738696 and 77541580738705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9692697592343 + ... + 9692697592350.

It is an arithmetic number, because the mean of its divisors is an integer number (22616294382143).

Almost surely, 2^{77541580738772} is an apocalyptic number.

It is an amenable number.

77541580738772 is a deficient number, since it is larger than the sum of its proper divisors (58156185554086).

77541580738772 is a wasteful number, since it uses less digits than its factorization.

77541580738772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19385395184697 (or 19385395184695 counting only the distinct ones).

The product of its (nonzero) digits is 645388800, while the sum is 71.

The spelling of 77541580738772 in words is "seventy-seven trillion, five hundred forty-one billion, five hundred eighty million, seven hundred thirty-eight thousand, seven hundred seventy-two".