77158395076 has 27 divisors (see below), whose sum is σ = 157080364077. Its totient is φ = 33066216960.

The previous prime is 77158395071. The next prime is 77158395101. The reversal of 77158395076 is 67059385177.

The square root of 77158395076 is 277774.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 628705476 + 76529689600 = 25074^2 + 276640^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77158395076.

It is not an unprimeable number, because it can be changed into a prime (77158395071) 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 8 ways as a sum of consecutive naturals, for example, 3878916 + ... + 3898756.

Almost surely, 2^77158395076 is an apocalyptic number.

77158395076 is the 277774-th square number.

It is an amenable number.

77158395076 is an abundant number, since it is smaller than the sum of its proper divisors (79921969001).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77158395076 is an frugal number, since it uses more digits than its factorization.

77158395076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39700 (or 19850 counting only the distinct ones).

The product of its (nonzero) digits is 11113200, while the sum is 58.

The spelling of 77158395076 in words is "seventy-seven billion, one hundred fifty-eight million, three hundred ninety-five thousand, seventy-six".