74877700724021 has 8 divisors (see below), whose sum is σ = 80707461014040. Its totient is φ = 69057931456512.

The previous prime is 74877700724009. The next prime is 74877700724051. The reversal of 74877700724021 is 12042700777847.

It can be written as a sum of positive squares in 4 ways, for example, as 4703320413796 + 70174380310225 = 2168714^2 + 8377015^2 .

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-74877700724021 is a prime.

It is a super-3 number, since 3×74877700724021³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74877700724051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2497740056 + ... + 2497770033.

It is an arithmetic number, because the mean of its divisors is an integer number (10088432626755).

Almost surely, 2^{74877700724021} is an apocalyptic number.

It is an amenable number.

74877700724021 is a deficient number, since it is larger than the sum of its proper divisors (5829760290019).

74877700724021 is a wasteful number, since it uses less digits than its factorization.

74877700724021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4995511255.

The product of its (nonzero) digits is 8605184, while the sum is 56.

The spelling of 74877700724021 in words is "seventy-four trillion, eight hundred seventy-seven billion, seven hundred million, seven hundred twenty-four thousand, twenty-one".