75471721227444 has 96 divisors (see below), whose sum is σ = 187318768000000. Its totient is φ = 23582879364096.

The previous prime is 75471721227439. The next prime is 75471721227517. The reversal of 75471721227444 is 44472212717457.

It is a Harshad number since it is a multiple of its sum of digits (57).

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, 28044987 + ... + 30618045.

Almost surely, 2^{75471721227444} 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 75471721227444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93659384000000).

75471721227444 is an abundant number, since it is smaller than the sum of its proper divisors (111847046772556).

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

75471721227444 is a wasteful number, since it uses less digits than its factorization.

75471721227444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574437 (or 2574435 counting only the distinct ones).

The product of its digits is 24586240, while the sum is 57.

The spelling of 75471721227444 in words is "seventy-five trillion, four hundred seventy-one billion, seven hundred twenty-one million, two hundred twenty-seven thousand, four hundred forty-four".