420194536443 has 16 divisors (see below), whose sum is σ = 679102281600. Its totient is φ = 254663355240.

The previous prime is 420194536427. The next prime is 420194536507. The reversal of 420194536443 is 344635491024.

420194536443 is a `hidden beast` number, since 4 + 20 + 1 + 94 + 536 + 4 + 4 + 3 = 666.

It is not a de Polignac number, because 420194536443 - 2⁴ = 420194536427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420194536343) 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, 707397913 + ... + 707398506.

It is an arithmetic number, because the mean of its divisors is an integer number (42443892600).

Almost surely, 2^420194536443 is an apocalyptic number.

420194536443 is a deficient number, since it is larger than the sum of its proper divisors (258907745157).

420194536443 is a wasteful number, since it uses less digits than its factorization.

420194536443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414796439 (or 1414796433 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 420194536443 in words is "four hundred twenty billion, one hundred ninety-four million, five hundred thirty-six thousand, four hundred forty-three".