7845480875421 has 48 divisors (see below), whose sum is σ = 13120909401600. Its totient is φ = 4424459929344.

The previous prime is 7845480875389. The next prime is 7845480875443. The reversal of 7845480875421 is 1245780845487.

7845480875421 is a `hidden beast` number, since 7 + 8 + 4 + 5 + 4 + 8 + 0 + 87 + 542 + 1 = 666.

It is not a de Polignac number, because 7845480875421 - 2⁵ = 7845480875389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7845480875621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11150545 + ... + 11833241.

It is an arithmetic number, because the mean of its divisors is an integer number (273352279200).

Almost surely, 2^{7845480875421} is an apocalyptic number.

It is an amenable number.

7845480875421 is a deficient number, since it is larger than the sum of its proper divisors (5275428526179).

7845480875421 is a wasteful number, since it uses less digits than its factorization.

7845480875421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685098 (or 685095 counting only the distinct ones).

The product of its (nonzero) digits is 80281600, while the sum is 63.

The spelling of 7845480875421 in words is "seven trillion, eight hundred forty-five billion, four hundred eighty million, eight hundred seventy-five thousand, four hundred twenty-one".