74887678846 has 4 divisors (see below), whose sum is σ = 112331518272. Its totient is φ = 37443839422.

The previous prime is 74887678813. The next prime is 74887678849. The reversal of 74887678846 is 64887678847.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64887678847 = 3433 ⋅18901159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74887678849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18721919710 + ... + 18721919713.

It is an arithmetic number, because the mean of its divisors is an integer number (28082879568).

Almost surely, 2^74887678846 is an apocalyptic number.

74887678846 is a deficient number, since it is larger than the sum of its proper divisors (37443839426).

74887678846 is a wasteful number, since it uses less digits than its factorization.

74887678846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37443839425.

The product of its digits is 809238528, while the sum is 73.

Subtracting from 74887678846 its reverse (64887678847), we obtain a palindrome (9999999999).

The spelling of 74887678846 in words is "seventy-four billion, eight hundred eighty-seven million, six hundred seventy-eight thousand, eight hundred forty-six".