7945545889280 has 160 divisors (see below), whose sum is σ = 19574679202848. Its totient is φ = 3091415040000.

The previous prime is 7945545889271. The next prime is 7945545889283. The reversal of 7945545889280 is 829885455497.

It is a tau number, because it is divible by the number of its divisors (160).

It is a junction number, because it is equal to n+sod(n) for n = 7945545889198 and 7945545889207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7945545889283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26379530 + ... + 26679030.

Almost surely, 2^{7945545889280} 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 7945545889280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9787339601424).

7945545889280 is an abundant number, since it is smaller than the sum of its proper divisors (11629133313568).

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

7945545889280 is a wasteful number, since it uses less digits than its factorization.

7945545889280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299808 (or 299792 counting only the distinct ones).

The product of its (nonzero) digits is 1161216000, while the sum is 74.

The spelling of 7945545889280 in words is "seven trillion, nine hundred forty-five billion, five hundred forty-five million, eight hundred eighty-nine thousand, two hundred eighty".