77538060052 has 24 divisors (see below), whose sum is σ = 143681998824. Its totient is φ = 36486331392.

The previous prime is 77538060043. The next prime is 77538060091. The reversal of 77538060052 is 25006083577.

It can be written as a sum of positive squares in 4 ways, for example, as 32430247056 + 45107812996 = 180084^2 + 212386^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77538059990 and 77538060008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2108608 + ... + 2145064.

It is an arithmetic number, because the mean of its divisors is an integer number (5986749951).

Almost surely, 2^77538060052 is an apocalyptic number.

It is an amenable number.

77538060052 is a deficient number, since it is larger than the sum of its proper divisors (66143938772).

77538060052 is a wasteful number, since it uses less digits than its factorization.

77538060052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67755 (or 67753 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 77538060052 in words is "seventy-seven billion, five hundred thirty-eight million, sixty thousand, fifty-two".