421106365575 has 72 divisors (see below), whose sum is σ = 907366428800. Its totient is φ = 182373871680.

The previous prime is 421106365573. The next prime is 421106365583. The reversal of 421106365575 is 575563601124.

421106365575 is a `hidden beast` number, since 4 + 2 + 1 + 1 + 0 + 636 + 5 + 5 + 7 + 5 = 666.

It is not a de Polignac number, because 421106365575 - 2¹ = 421106365573 is a prime.

It is a super-2 number, since 2×421106365575² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 421106365575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421106365573) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7006105 + ... + 7065954.

Almost surely, 2^421106365575 is an apocalyptic number.

421106365575 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

421106365575 is an abundant number, since it is smaller than the sum of its proper divisors (486260063225).

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

421106365575 is a wasteful number, since it uses less digits than its factorization.

421106365575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14072101 (or 14072093 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

Adding to 421106365575 its reverse (575563601124), we get a palindrome (996669966699).

The spelling of 421106365575 in words is "four hundred twenty-one billion, one hundred six million, three hundred sixty-five thousand, five hundred seventy-five".