74887678848 has 64 divisors (see below), whose sum is σ = 198950587920. Its totient is φ = 24958771200.

The previous prime is 74887678813. The next prime is 74887678849. The reversal of 74887678848 is 84887678847.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 74887678848.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3792136 + ... + 3811832.

Almost surely, 2^74887678848 is an apocalyptic number.

It is an amenable number.

74887678848 is an abundant number, since it is smaller than the sum of its proper divisors (124062909072).

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

74887678848 is a wasteful number, since it uses less digits than its factorization.

74887678848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29615 (or 29603 counting only the distinct ones).

The product of its digits is 1078984704, while the sum is 75.

Subtracting 74887678848 from its reverse (84887678847), we obtain a palindrome (9999999999).

The spelling of 74887678848 in words is "seventy-four billion, eight hundred eighty-seven million, six hundred seventy-eight thousand, eight hundred forty-eight".