77653542347 has 2 divisors, whose sum is σ = 77653542348. Its totient is φ = 77653542346.

The previous prime is 77653542313. The next prime is 77653542367. The reversal of 77653542347 is 74324535677.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77653542347 - 2¹⁸ = 77653280203 is a prime.

It is not a weakly prime, because it can be changed into another prime (77653542367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38826771173 + 38826771174.

It is an arithmetic number, because the mean of its divisors is an integer number (38826771174).

Almost surely, 2^77653542347 is an apocalyptic number.

77653542347 is a deficient number, since it is larger than the sum of its proper divisors (1).

77653542347 is an equidigital number, since it uses as much as digits as its factorization.

77653542347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14817600, while the sum is 53.

The spelling of 77653542347 in words is "seventy-seven billion, six hundred fifty-three million, five hundred forty-two thousand, three hundred forty-seven".