74847690791 has 2 divisors, whose sum is σ = 74847690792. Its totient is φ = 74847690790.

The previous prime is 74847690779. The next prime is 74847690817. The reversal of 74847690791 is 19709674847.

It is a weak prime.

It is an emirp because it is prime and its reverse (19709674847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74847690791 - 2³⁰ = 73773948967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74847690391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37423845395 + 37423845396.

It is an arithmetic number, because the mean of its divisors is an integer number (37423845396).

Almost surely, 2^74847690791 is an apocalyptic number.

74847690791 is a deficient number, since it is larger than the sum of its proper divisors (1).

74847690791 is an equidigital number, since it uses as much as digits as its factorization.

74847690791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21337344, while the sum is 62.

The spelling of 74847690791 in words is "seventy-four billion, eight hundred forty-seven million, six hundred ninety thousand, seven hundred ninety-one".