421036564455 has 48 divisors (see below), whose sum is σ = 820106030016. Its totient is φ = 198267379200.

The previous prime is 421036564451. The next prime is 421036564457. The reversal of 421036564455 is 554465630124.

421036564455 is a `hidden beast` number, since 4 + 2 + 1 + 0 + 36 + 564 + 4 + 55 = 666.

It is not a de Polignac number, because 421036564455 - 2² = 421036564451 is a prime.

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 421036564455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421036564451) 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, 15632646 + ... + 15659555.

It is an arithmetic number, because the mean of its divisors is an integer number (17085542292).

Almost surely, 2^421036564455 is an apocalyptic number.

421036564455 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

421036564455 is a deficient number, since it is larger than the sum of its proper divisors (399069465561).

421036564455 is a wasteful number, since it uses less digits than its factorization.

421036564455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31292248 (or 31292245 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 421036564455 in words is "four hundred twenty-one billion, thirty-six million, five hundred sixty-four thousand, four hundred fifty-five".