74651540563 has 4 divisors (see below), whose sum is σ = 74662022160. Its totient is φ = 74641058968.

The previous prime is 74651540527. The next prime is 74651540609. The reversal of 74651540563 is 36504515647.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36504515647 = 37 ⋅986608531.

It is a cyclic number.

It is not a de Polignac number, because 74651540563 - 2¹⁷ = 74651409491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74651540063) 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, 5230108 + ... + 5244361.

It is an arithmetic number, because the mean of its divisors is an integer number (18665505540).

Almost surely, 2^74651540563 is an apocalyptic number.

74651540563 is a deficient number, since it is larger than the sum of its proper divisors (10481597).

74651540563 is a wasteful number, since it uses less digits than its factorization.

74651540563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10481596.

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 74651540563 in words is "seventy-four billion, six hundred fifty-one million, five hundred forty thousand, five hundred sixty-three".