74978461140 has 48 divisors (see below), whose sum is σ = 229025119680. Its totient is φ = 18176596480.

The previous prime is 74978461123. The next prime is 74978461183. The reversal of 74978461140 is 4116487947.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56801205 + ... + 56802524.

It is an arithmetic number, because the mean of its divisors is an integer number (4771356660).

Almost surely, 2^74978461140 is an apocalyptic number.

It is an amenable number.

74978461140 is an abundant number, since it is smaller than the sum of its proper divisors (154046658540).

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

74978461140 is a wasteful number, since it uses less digits than its factorization.

74978461140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113603752 (or 113603750 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 74978461140 in words is "seventy-four billion, nine hundred seventy-eight million, four hundred sixty-one thousand, one hundred forty".