74779953498680 has 128 divisors (see below), whose sum is σ = 178997792561280. Its totient is φ = 28018974228480.

The previous prime is 74779953498673. The next prime is 74779953498707. The reversal of 74779953498680 is 8689435997747.

It is a junction number, because it is equal to n+sod(n) for n = 74779953498592 and 74779953498601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277314077 + ... + 277583603.

It is an arithmetic number, because the mean of its divisors is an integer number (1398420254385).

Almost surely, 2^{74779953498680} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74779953498680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89498896280640).

74779953498680 is an abundant number, since it is smaller than the sum of its proper divisors (104217839062600).

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

74779953498680 is a wasteful number, since it uses less digits than its factorization.

74779953498680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271489 (or 271485 counting only the distinct ones).

The product of its (nonzero) digits is 23044331520, while the sum is 86.

The spelling of 74779953498680 in words is "seventy-four trillion, seven hundred seventy-nine billion, nine hundred fifty-three million, four hundred ninety-eight thousand, six hundred eighty".