74780306278920 has 384 divisors, whose sum is σ = 270828556577280. Its totient is φ = 17739089664000.

The previous prime is 74780306278919. The next prime is 74780306278943. The reversal of 74780306278920 is 2987260308747.

74780306278920 is a `hidden beast` number, since 7 + 478 + 0 + 3 + 0 + 6 + 2 + 78 + 92 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 934468510 + ... + 934548530.

It is an arithmetic number, because the mean of its divisors is an integer number (705282699420).

Almost surely, 2^{74780306278920} 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 74780306278920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135414278288640).

74780306278920 is an abundant number, since it is smaller than the sum of its proper divisors (196048250298360).

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

74780306278920 is a wasteful number, since it uses less digits than its factorization.

74780306278920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85117 (or 85110 counting only the distinct ones).

The product of its (nonzero) digits is 56899584, while the sum is 63.

The spelling of 74780306278920 in words is "seventy-four trillion, seven hundred eighty billion, three hundred six million, two hundred seventy-eight thousand, nine hundred twenty".