74917871971 has 2 divisors, whose sum is σ = 74917871972. Its totient is φ = 74917871970.

The previous prime is 74917871939. The next prime is 74917871983. The reversal of 74917871971 is 17917871947.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74917871971 - 2⁵ = 74917871939 is a prime.

It is a super-2 number, since 2×74917871971² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74917871911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37458935985 + 37458935986.

It is an arithmetic number, because the mean of its divisors is an integer number (37458935986).

Almost surely, 2^74917871971 is an apocalyptic number.

74917871971 is a deficient number, since it is larger than the sum of its proper divisors (1).

74917871971 is an equidigital number, since it uses as much as digits as its factorization.

74917871971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6223392, while the sum is 61.

The spelling of 74917871971 in words is "seventy-four billion, nine hundred seventeen million, eight hundred seventy-one thousand, nine hundred seventy-one".