74216517861 has 16 divisors (see below), whose sum is σ = 104192294400. Its totient is φ = 46860648048.

The previous prime is 74216517841. The next prime is 74216517863. The reversal of 74216517861 is 16871561247.

It is not a de Polignac number, because 74216517861 - 2⁷ = 74216517733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74216517861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74216517863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30640 + ... + 386486.

It is an arithmetic number, because the mean of its divisors is an integer number (6512018400).

Almost surely, 2^74216517861 is an apocalyptic number.

It is an amenable number.

74216517861 is a deficient number, since it is larger than the sum of its proper divisors (29975776539).

74216517861 is a wasteful number, since it uses less digits than its factorization.

74216517861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359528.

The product of its digits is 564480, while the sum is 48.

The spelling of 74216517861 in words is "seventy-four billion, two hundred sixteen million, five hundred seventeen thousand, eight hundred sixty-one".