420332415555 has 32 divisors (see below), whose sum is σ = 725486642496. Its totient is φ = 206583865344.

The previous prime is 420332415551. The next prime is 420332415589. The reversal of 420332415555 is 555514233024.

420332415555 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 420332415555 - 2² = 420332415551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (420332415551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1701862 + ... + 1933131.

It is an arithmetic number, because the mean of its divisors is an integer number (22671457578).

Almost surely, 2^420332415555 is an apocalyptic number.

420332415555 is a deficient number, since it is larger than the sum of its proper divisors (305154226941).

420332415555 is a wasteful number, since it uses less digits than its factorization.

420332415555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3635607.

The product of its (nonzero) digits is 360000, while the sum is 39.

Adding to 420332415555 its reverse (555514233024), we get a palindrome (975846648579).

The spelling of 420332415555 in words is "four hundred twenty billion, three hundred thirty-two million, four hundred fifteen thousand, five hundred fifty-five".