74639253607 has 2 divisors, whose sum is σ = 74639253608. Its totient is φ = 74639253606.

The previous prime is 74639253589. The next prime is 74639253659. The reversal of 74639253607 is 70635293647.

It is an a-pointer prime, because the next prime (74639253659) can be obtained adding 74639253607 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74639253607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74639254607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37319626803 + 37319626804.

It is an arithmetic number, because the mean of its divisors is an integer number (37319626804).

Almost surely, 2^74639253607 is an apocalyptic number.

74639253607 is a deficient number, since it is larger than the sum of its proper divisors (1).

74639253607 is an equidigital number, since it uses as much as digits as its factorization.

74639253607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5715360, while the sum is 52.

The spelling of 74639253607 in words is "seventy-four billion, six hundred thirty-nine million, two hundred fifty-three thousand, six hundred seven".