420638472575 has 6 divisors (see below), whose sum is σ = 521591706024. Its totient is φ = 336510778040.

The previous prime is 420638472557. The next prime is 420638472577. The reversal of 420638472575 is 575274836024.

It is not a de Polignac number, because 420638472575 - 2⁶ = 420638472511 is a prime.

It is a super-2 number, since 2×420638472575² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420638472577) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8412769427 + ... + 8412769476.

It is an arithmetic number, because the mean of its divisors is an integer number (86931951004).

Almost surely, 2^420638472575 is an apocalyptic number.

420638472575 is a deficient number, since it is larger than the sum of its proper divisors (100953233449).

420638472575 is a wasteful number, since it uses less digits than its factorization.

420638472575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16825538913 (or 16825538908 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 53.

The spelling of 420638472575 in words is "four hundred twenty billion, six hundred thirty-eight million, four hundred seventy-two thousand, five hundred seventy-five".