74081500821 has 12 divisors (see below), whose sum is σ = 112638539520. Its totient is φ = 46788316200.

The previous prime is 74081500817. The next prime is 74081500853. The reversal of 74081500821 is 12800518047.

74081500821 is a `hidden beast` number, since 74 + 0 + 8 + 1 + 500 + 82 + 1 = 666.

It is not a de Polignac number, because 74081500821 - 2² = 74081500817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74081500811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216612405 + ... + 216612746.

It is an arithmetic number, because the mean of its divisors is an integer number (9386544960).

Almost surely, 2^74081500821 is an apocalyptic number.

It is an amenable number.

74081500821 is a deficient number, since it is larger than the sum of its proper divisors (38557038699).

74081500821 is a wasteful number, since it uses less digits than its factorization.

74081500821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433225176 (or 433225173 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The spelling of 74081500821 in words is "seventy-four billion, eighty-one million, five hundred thousand, eight hundred twenty-one".