77489833847 has 2 divisors, whose sum is σ = 77489833848. Its totient is φ = 77489833846.

The previous prime is 77489833831. The next prime is 77489833859. The reversal of 77489833847 is 74833898477.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77489833847 - 2⁴ = 77489833831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77489833877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38744916923 + 38744916924.

It is an arithmetic number, because the mean of its divisors is an integer number (38744916924).

Almost surely, 2^77489833847 is an apocalyptic number.

77489833847 is a deficient number, since it is larger than the sum of its proper divisors (1).

77489833847 is an equidigital number, since it uses as much as digits as its factorization.

77489833847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 227598336, while the sum is 68.

The spelling of 77489833847 in words is "seventy-seven billion, four hundred eighty-nine million, eight hundred thirty-three thousand, eight hundred forty-seven".