74748966641 has 4 divisors (see below), whose sum is σ = 78683122800. Its totient is φ = 70814810484.

The previous prime is 74748966577. The next prime is 74748966683. The reversal of 74748966641 is 14666984747.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14666984747 = 23 ⋅637694989.

It is a cyclic number.

It is not a de Polignac number, because 74748966641 - 2⁶ = 74748966577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74748966041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1967078051 + ... + 1967078088.

It is an arithmetic number, because the mean of its divisors is an integer number (19670780700).

Almost surely, 2^74748966641 is an apocalyptic number.

It is an amenable number.

74748966641 is a deficient number, since it is larger than the sum of its proper divisors (3934156159).

74748966641 is a wasteful number, since it uses less digits than its factorization.

74748966641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3934156158.

The product of its digits is 48771072, while the sum is 62.

The spelling of 74748966641 in words is "seventy-four billion, seven hundred forty-eight million, nine hundred sixty-six thousand, six hundred forty-one".