420943180255 has 64 divisors (see below), whose sum is σ = 570108147840. Its totient is φ = 296360902656.

The previous prime is 420943180247. The next prime is 420943180283. The reversal of 420943180255 is 552081349024.

It is not a de Polignac number, because 420943180255 - 2³ = 420943180247 is a prime.

It is a super-2 number, since 2×420943180255² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19780761 + ... + 19802029.

It is an arithmetic number, because the mean of its divisors is an integer number (8907939810).

Almost surely, 2^420943180255 is an apocalyptic number.

420943180255 is a deficient number, since it is larger than the sum of its proper divisors (149164967585).

420943180255 is a wasteful number, since it uses less digits than its factorization.

420943180255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21500.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 420943180255 in words is "four hundred twenty billion, nine hundred forty-three million, one hundred eighty thousand, two hundred fifty-five".