420845688740475 has 288 divisors, whose sum is σ = 808211571148800. Its totient is φ = 209013899212800.

The previous prime is 420845688740467. The next prime is 420845688740567. The reversal of 420845688740475 is 574047886548024.

420845688740475 is a `hidden beast` number, since 4 + 2 + 0 + 8 + 4 + 5 + 6 + 88 + 74 + 0 + 475 = 666.

It is not a de Polignac number, because 420845688740475 - 2³ = 420845688740467 is a prime.

It is a super-2 number, since 2×420845688740475² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 3452068821 + ... + 3452190729.

It is an arithmetic number, because the mean of its divisors is an integer number (2806290177600).

Almost surely, 2^{420845688740475} is an apocalyptic number.

420845688740475 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

420845688740475 is a deficient number, since it is larger than the sum of its proper divisors (387365882408325).

420845688740475 is a wasteful number, since it uses less digits than its factorization.

420845688740475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122195 (or 122187 counting only the distinct ones).

The product of its (nonzero) digits is 1926758400, while the sum is 72.

The spelling of 420845688740475 in words is "four hundred twenty trillion, eight hundred forty-five billion, six hundred eighty-eight million, seven hundred forty thousand, four hundred seventy-five".