74918681947 has 8 divisors (see below), whose sum is σ = 81170446896. Its totient is φ = 68871892992.

The previous prime is 74918681911. The next prime is 74918681953.

74918681947 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74918681947 is a prime.

It is a super-2 number, since 2×74918681947² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74918681147) 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 7 ways as a sum of consecutive naturals, for example, 51243238 + ... + 51244699.

It is an arithmetic number, because the mean of its divisors is an integer number (10146305862).

Almost surely, 2^74918681947 is an apocalyptic number.

74918681947 is a deficient number, since it is larger than the sum of its proper divisors (6251764949).

74918681947 is a wasteful number, since it uses less digits than its factorization.

74918681947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102487997.

The product of its digits is 24385536, while the sum is 64.

The spelling of 74918681947 in words is "seventy-four billion, nine hundred eighteen million, six hundred eighty-one thousand, nine hundred forty-seven".