8421703525404 has 72 divisors (see below), whose sum is σ = 22927148006672. Its totient is φ = 2591135205120.

The previous prime is 8421703525387. The next prime is 8421703525409. The reversal of 8421703525404 is 4045253071248.

8421703525404 is a `hidden beast` number, since 8 + 4 + 2 + 1 + 70 + 35 + 2 + 540 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 8421703525404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8421703525409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7243299 + ... + 8325189.

Almost surely, 2^{8421703525404} is an apocalyptic number.

It is an amenable number.

8421703525404 is an abundant number, since it is smaller than the sum of its proper divisors (14505444481268).

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

8421703525404 is a wasteful number, since it uses less digits than its factorization.

8421703525404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098547 (or 1098542 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 45.

The spelling of 8421703525404 in words is "eight trillion, four hundred twenty-one billion, seven hundred three million, five hundred twenty-five thousand, four hundred four".