74756843609616 has 135 divisors (see below), whose sum is σ = 243375303021903. Its totient is φ = 21358890665280.

The previous prime is 74756843609603. The next prime is 74756843609621. The reversal of 74756843609616 is 61690634865747.

The square root of 74756843609616 is 8646204.

It is a perfect power (a square), and thus also a powerful number.

74756843609616 is a `hidden beast` number, since 7 + 4 + 7 + 5 + 6 + 8 + 4 + 3 + 609 + 6 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 726229671 + ... + 726332601.

Almost surely, 2^{74756843609616} is an apocalyptic number.

74756843609616 is the 8646204-th square number.

It is an amenable number.

74756843609616 is an abundant number, since it is smaller than the sum of its proper divisors (168618459412287).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74756843609616 is an frugal number, since it uses more digits than its factorization.

74756843609616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205890 (or 102943 counting only the distinct ones).

The product of its (nonzero) digits is 1097349120, while the sum is 72.

The spelling of 74756843609616 in words is "seventy-four trillion, seven hundred fifty-six billion, eight hundred forty-three million, six hundred nine thousand, six hundred sixteen".