74801117221 has 8 divisors (see below), whose sum is σ = 75959098488. Its totient is φ = 73651320000.

The previous prime is 74801117207. The next prime is 74801117239. The reversal of 74801117221 is 12271110847.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 702833121 + 74098284100 = 26511^2 + 272210^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 74801117221 - 2²⁷ = 74666899493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74801147221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2027590 + ... + 2064151.

It is an arithmetic number, because the mean of its divisors is an integer number (9494887311).

Almost surely, 2^74801117221 is an apocalyptic number.

It is an amenable number.

74801117221 is a deficient number, since it is larger than the sum of its proper divisors (1157981267).

74801117221 is a wasteful number, since it uses less digits than its factorization.

74801117221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4092023.

The product of its (nonzero) digits is 6272, while the sum is 34.

The spelling of 74801117221 in words is "seventy-four billion, eight hundred one million, one hundred seventeen thousand, two hundred twenty-one".