74839997077 has 2 divisors, whose sum is σ = 74839997078. Its totient is φ = 74839997076.

The previous prime is 74839996927. The next prime is 74839997117. The reversal of 74839997077 is 77079993847.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73552694436 + 1287302641 = 271206^2 + 35879^2 .

It is a cyclic number.

It is not a de Polignac number, because 74839997077 - 2¹¹ = 74839995029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74839996997 and 74839997015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74839991077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37419998538 + 37419998539.

It is an arithmetic number, because the mean of its divisors is an integer number (37419998539).

Almost surely, 2^74839997077 is an apocalyptic number.

It is an amenable number.

74839997077 is a deficient number, since it is larger than the sum of its proper divisors (1).

74839997077 is an equidigital number, since it uses as much as digits as its factorization.

74839997077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168031584, while the sum is 70.

The spelling of 74839997077 in words is "seventy-four billion, eight hundred thirty-nine million, nine hundred ninety-seven thousand, seventy-seven".