73778127960 has 128 divisors (see below), whose sum is σ = 235166846400. Its totient is φ = 18516715520.

The previous prime is 73778127947. The next prime is 73778128007. The reversal of 73778127960 is 6972187737.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 73778127960.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 526990 + ... + 652130.

Almost surely, 2^73778127960 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 73778127960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117583423200).

73778127960 is an abundant number, since it is smaller than the sum of its proper divisors (161388718440).

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

73778127960 is a wasteful number, since it uses less digits than its factorization.

73778127960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125206 (or 125168 counting only the distinct ones).

The product of its (nonzero) digits is 6223392, while the sum is 57.

The spelling of 73778127960 in words is "seventy-three billion, seven hundred seventy-eight million, one hundred twenty-seven thousand, nine hundred sixty".