74367647136021 has 8 divisors (see below), whose sum is σ = 99237939600960. Its totient is φ = 49537893047552.

The previous prime is 74367647135981. The next prime is 74367647136053. The reversal of 74367647136021 is 12063174676347.

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-74367647136021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74367647636021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10134589836 + ... + 10134597173.

It is an arithmetic number, because the mean of its divisors is an integer number (12404742450120).

Almost surely, 2^{74367647136021} is an apocalyptic number.

It is an amenable number.

74367647136021 is a deficient number, since it is larger than the sum of its proper divisors (24870292464939).

74367647136021 is a wasteful number, since it uses less digits than its factorization.

74367647136021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20269188235.

The product of its (nonzero) digits is 21337344, while the sum is 57.

The spelling of 74367647136021 in words is "seventy-four trillion, three hundred sixty-seven billion, six hundred forty-seven million, one hundred thirty-six thousand, twenty-one".