77332770745 has 16 divisors (see below), whose sum is σ = 95514260688. Its totient is φ = 60063517440.

The previous prime is 77332770733. The next prime is 77332770761. The reversal of 77332770745 is 54707723377.

It can be written as a sum of positive squares in 8 ways, for example, as 5828406336 + 71504364409 = 76344^2 + 267403^2 .

It is not a de Polignac number, because 77332770745 - 2⁹ = 77332770233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77332770692 and 77332770701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368094 + ... + 538663.

It is an arithmetic number, because the mean of its divisors is an integer number (5969641293).

Almost surely, 2^77332770745 is an apocalyptic number.

It is an amenable number.

77332770745 is a deficient number, since it is larger than the sum of its proper divisors (18181489943).

77332770745 is a wasteful number, since it uses less digits than its factorization.

77332770745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907260.

The product of its (nonzero) digits is 6050520, while the sum is 52.

The spelling of 77332770745 in words is "seventy-seven billion, three hundred thirty-two million, seven hundred seventy thousand, seven hundred forty-five".