74464787643 has 4 divisors (see below), whose sum is σ = 99286383528. Its totient is φ = 49643191760.

The previous prime is 74464787641. The next prime is 74464787651. The reversal of 74464787643 is 34678746447.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74464787643 - 2¹ = 74464787641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74464787641) 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, 12410797938 + ... + 12410797943.

It is an arithmetic number, because the mean of its divisors is an integer number (24821595882).

Almost surely, 2^74464787643 is an apocalyptic number.

74464787643 is a deficient number, since it is larger than the sum of its proper divisors (24821595885).

74464787643 is a wasteful number, since it uses less digits than its factorization.

74464787643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24821595884.

The product of its digits is 75866112, while the sum is 60.

The spelling of 74464787643 in words is "seventy-four billion, four hundred sixty-four million, seven hundred eighty-seven thousand, six hundred forty-three".