74830308721 has 16 divisors (see below), whose sum is σ = 88245722880. Its totient is φ = 62119077120.

The previous prime is 74830308697. The next prime is 74830308811. The reversal of 74830308721 is 12780303847.

It is a cyclic number.

It is not a de Polignac number, because 74830308721 - 2¹³ = 74830300529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74830708721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 912261 + ... + 990898.

It is an arithmetic number, because the mean of its divisors is an integer number (5515357680).

Almost surely, 2^74830308721 is an apocalyptic number.

It is an amenable number.

74830308721 is a deficient number, since it is larger than the sum of its proper divisors (13415414159).

74830308721 is a wasteful number, since it uses less digits than its factorization.

74830308721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903344.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 74830308721 in words is "seventy-four billion, eight hundred thirty million, three hundred eight thousand, seven hundred twenty-one".