77147763077 has 32 divisors (see below), whose sum is σ = 102528307200. Its totient is φ = 56230200000.

The previous prime is 77147763073. The next prime is 77147763083. The reversal of 77147763077 is 77036774177.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 77147763077 - 2² = 77147763073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77147763073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218174 + ... + 449327.

It is an arithmetic number, because the mean of its divisors is an integer number (3204009600).

Almost surely, 2^77147763077 is an apocalyptic number.

77147763077 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

77147763077 is a deficient number, since it is larger than the sum of its proper divisors (25380544123).

77147763077 is a wasteful number, since it uses less digits than its factorization.

77147763077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667617.

The product of its (nonzero) digits is 8470728, while the sum is 56.

The spelling of 77147763077 in words is "seventy-seven billion, one hundred forty-seven million, seven hundred sixty-three thousand, seventy-seven".