74640677329 has 2 divisors, whose sum is σ = 74640677330. Its totient is φ = 74640677328.

The previous prime is 74640677323. The next prime is 74640677383. The reversal of 74640677329 is 92377604647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66743689104 + 7896988225 = 258348^2 + 88865^2 .

It is a cyclic number.

It is not a de Polignac number, because 74640677329 - 2¹³ = 74640669137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74640677329.

It is not a weakly prime, because it can be changed into another prime (74640677323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37320338664 + 37320338665.

It is an arithmetic number, because the mean of its divisors is an integer number (37320338665).

Almost surely, 2^74640677329 is an apocalyptic number.

It is an amenable number.

74640677329 is a deficient number, since it is larger than the sum of its proper divisors (1).

74640677329 is an equidigital number, since it uses as much as digits as its factorization.

74640677329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10668672, while the sum is 55.

The spelling of 74640677329 in words is "seventy-four billion, six hundred forty million, six hundred seventy-seven thousand, three hundred twenty-nine".