74564281340 has 48 divisors (see below), whose sum is σ = 164930858400. Its totient is φ = 28238015232.

The previous prime is 74564281313. The next prime is 74564281343. The reversal of 74564281340 is 4318246547.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 74564281291 and 74564281300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74564281343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 545426 + ... + 668294.

It is an arithmetic number, because the mean of its divisors is an integer number (3436059550).

Almost surely, 2^74564281340 is an apocalyptic number.

It is an amenable number.

74564281340 is an abundant number, since it is smaller than the sum of its proper divisors (90366577060).

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

74564281340 is a wasteful number, since it uses less digits than its factorization.

74564281340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124494 (or 124492 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 44.

The spelling of 74564281340 in words is "seventy-four billion, five hundred sixty-four million, two hundred eighty-one thousand, three hundred forty".