74629577989 has 2 divisors, whose sum is σ = 74629577990. Its totient is φ = 74629577988.

The previous prime is 74629577951. The next prime is 74629578011. The reversal of 74629577989 is 98977592647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56255775489 + 18373802500 = 237183^2 + 135550^2 .

It is an emirp because it is prime and its reverse (98977592647) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74629577989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74629577189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37314788994 + 37314788995.

It is an arithmetic number, because the mean of its divisors is an integer number (37314788995).

Almost surely, 2^74629577989 is an apocalyptic number.

It is an amenable number.

74629577989 is a deficient number, since it is larger than the sum of its proper divisors (1).

74629577989 is an equidigital number, since it uses as much as digits as its factorization.

74629577989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480090240, while the sum is 73.

The spelling of 74629577989 in words is "seventy-four billion, six hundred twenty-nine million, five hundred seventy-seven thousand, nine hundred eighty-nine".