74067398645 has 8 divisors (see below), whose sum is σ = 91283064504. Its totient is φ = 57652461504.

The previous prime is 74067398633. The next prime is 74067398689. The reversal of 74067398645 is 54689376047.

It can be written as a sum of positive squares in 4 ways, for example, as 21665779249 + 52401619396 = 147193^2 + 228914^2 .

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-74067398645 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200181974 + ... + 200182343.

It is an arithmetic number, because the mean of its divisors is an integer number (11410383063).

Almost surely, 2^74067398645 is an apocalyptic number.

It is an amenable number.

74067398645 is a deficient number, since it is larger than the sum of its proper divisors (17215665859).

74067398645 is a wasteful number, since it uses less digits than its factorization.

74067398645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400364359.

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 74067398645 in words is "seventy-four billion, sixty-seven million, three hundred ninety-eight thousand, six hundred forty-five".