74978212340 has 24 divisors (see below), whose sum is σ = 157487366400. Its totient is φ = 29984976288.

The previous prime is 74978212333. The next prime is 74978212363. The reversal of 74978212340 is 4321287947.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296240 + ... + 487559.

It is an arithmetic number, because the mean of its divisors is an integer number (6561973600).

Almost surely, 2^74978212340 is an apocalyptic number.

It is an amenable number.

74978212340 is an abundant number, since it is smaller than the sum of its proper divisors (82509154060).

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

74978212340 is a wasteful number, since it uses less digits than its factorization.

74978212340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788591 (or 788589 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 74978212340 in words is "seventy-four billion, nine hundred seventy-eight million, two hundred twelve thousand, three hundred forty".