7845421416672 has 96 divisors (see below), whose sum is σ = 23537901542400. Its totient is φ = 2241393043968.

The previous prime is 7845421416671. The next prime is 7845421416743. The reversal of 7845421416672 is 2766141245487.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7845421416671) 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, 9438654 + ... + 10236162.

It is an arithmetic number, because the mean of its divisors is an integer number (245186474400).

Almost surely, 2^{7845421416672} is an apocalyptic number.

It is an amenable number.

7845421416672 is an abundant number, since it is smaller than the sum of its proper divisors (15692480125728).

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

7845421416672 is a wasteful number, since it uses less digits than its factorization.

7845421416672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812168 (or 812160 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 57.

The spelling of 7845421416672 in words is "seven trillion, eight hundred forty-five billion, four hundred twenty-one million, four hundred sixteen thousand, six hundred seventy-two".