74947973120 has 78 divisors (see below), whose sum is σ = 179947243518. Its totient is φ = 29963517952.

The previous prime is 74947973071. The next prime is 74947973147. The reversal of 74947973120 is 2137974947.

It can be written as a sum of positive squares in 3 ways, for example, as 34021064704 + 40926908416 = 184448^2 + 202304^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39177284 + ... + 39179196.

Almost surely, 2^74947973120 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 74947973120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89973621759).

74947973120 is an abundant number, since it is smaller than the sum of its proper divisors (104999270398).

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

74947973120 is an frugal number, since it uses more digits than its factorization.

74947973120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3855 (or 1920 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 53.

The spelling of 74947973120 in words is "seventy-four billion, nine hundred forty-seven million, nine hundred seventy-three thousand, one hundred twenty".