74011721818 has 8 divisors (see below), whose sum is σ = 112095423648. Its totient is φ = 36646580604.

The previous prime is 74011721813. The next prime is 74011721857. The reversal of 74011721818 is 81812711047.

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

It is not an unprimeable number, because it can be changed into a prime (74011721813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179639896 + ... + 179640307.

It is an arithmetic number, because the mean of its divisors is an integer number (14011927956).

Almost surely, 2^74011721818 is an apocalyptic number.

74011721818 is a deficient number, since it is larger than the sum of its proper divisors (38083701830).

74011721818 is a wasteful number, since it uses less digits than its factorization.

74011721818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359280308.

The product of its (nonzero) digits is 25088, while the sum is 40.

The spelling of 74011721818 in words is "seventy-four billion, eleven million, seven hundred twenty-one thousand, eight hundred eighteen".