77448038971 has 2 divisors, whose sum is σ = 77448038972. Its totient is φ = 77448038970.

The previous prime is 77448038959. The next prime is 77448038977. The reversal of 77448038971 is 17983084477.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77448038971 - 2¹¹ = 77448036923 is a prime.

It is not a weakly prime, because it can be changed into another prime (77448038977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38724019485 + 38724019486.

It is an arithmetic number, because the mean of its divisors is an integer number (38724019486).

Almost surely, 2^77448038971 is an apocalyptic number.

77448038971 is a deficient number, since it is larger than the sum of its proper divisors (1).

77448038971 is an equidigital number, since it uses as much as digits as its factorization.

77448038971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9483264, while the sum is 58.

The spelling of 77448038971 in words is "seventy-seven billion, four hundred forty-eight million, thirty-eight thousand, nine hundred seventy-one".