74356809091 has 2 divisors, whose sum is σ = 74356809092. Its totient is φ = 74356809090.

The previous prime is 74356809077. The next prime is 74356809097. The reversal of 74356809091 is 19090865347.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74356809091 - 2³⁵ = 39997070723 is a prime.

It is a super-3 number, since 3×74356809091³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (74356809097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37178404545 + 37178404546.

It is an arithmetic number, because the mean of its divisors is an integer number (37178404546).

Almost surely, 2^74356809091 is an apocalyptic number.

74356809091 is a deficient number, since it is larger than the sum of its proper divisors (1).

74356809091 is an equidigital number, since it uses as much as digits as its factorization.

74356809091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 74356809091 in words is "seventy-four billion, three hundred fifty-six million, eight hundred nine thousand, ninety-one".