74734225987 has 2 divisors, whose sum is σ = 74734225988. Its totient is φ = 74734225986.

The previous prime is 74734225949. The next prime is 74734226011. The reversal of 74734225987 is 78952243747.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74734225987 is a prime.

It is a super-2 number, since 2×74734225987² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74734225087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37367112993 + 37367112994.

It is an arithmetic number, because the mean of its divisors is an integer number (37367112994).

Almost surely, 2^74734225987 is an apocalyptic number.

74734225987 is a deficient number, since it is larger than the sum of its proper divisors (1).

74734225987 is an equidigital number, since it uses as much as digits as its factorization.

74734225987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23708160, while the sum is 58.

The spelling of 74734225987 in words is "seventy-four billion, seven hundred thirty-four million, two hundred twenty-five thousand, nine hundred eighty-seven".