74814326561 has 32 divisors (see below), whose sum is σ = 84742038528. Its totient is φ = 65531980800.

The previous prime is 74814326557. The next prime is 74814326581. The reversal of 74814326561 is 16562341847.

It is not a de Polignac number, because 74814326561 - 2² = 74814326557 is a prime.

It is a super-3 number, since 3×74814326561³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74814326581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56377880 + ... + 56379206.

It is an arithmetic number, because the mean of its divisors is an integer number (2648188704).

Almost surely, 2^74814326561 is an apocalyptic number.

It is an amenable number.

74814326561 is a deficient number, since it is larger than the sum of its proper divisors (9927711967).

74814326561 is a wasteful number, since it uses less digits than its factorization.

74814326561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721.

The product of its digits is 967680, while the sum is 47.

The spelling of 74814326561 in words is "seventy-four billion, eight hundred fourteen million, three hundred twenty-six thousand, five hundred sixty-one".