74580857837 has 2 divisors, whose sum is σ = 74580857838. Its totient is φ = 74580857836.

The previous prime is 74580857801. The next prime is 74580857867. The reversal of 74580857837 is 73875808547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74430206761 + 150651076 = 272819^2 + 12274^2 .

It is an emirp because it is prime and its reverse (73875808547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74580857837 - 2⁶ = 74580857773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74580857837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74580857867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37290428918 + 37290428919.

It is an arithmetic number, because the mean of its divisors is an integer number (37290428919).

Almost surely, 2^74580857837 is an apocalyptic number.

It is an amenable number.

74580857837 is a deficient number, since it is larger than the sum of its proper divisors (1).

74580857837 is an equidigital number, since it uses as much as digits as its factorization.

74580857837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52684800, while the sum is 62.

The spelling of 74580857837 in words is "seventy-four billion, five hundred eighty million, eight hundred fifty-seven thousand, eight hundred thirty-seven".