420536554503 has 16 divisors (see below), whose sum is σ = 605168714976. Its totient is φ = 258225431040.

The previous prime is 420536554489. The next prime is 420536554507. The reversal of 420536554503 is 305455635024.

It is a happy number.

It is not a de Polignac number, because 420536554503 - 2²¹ = 420534457351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420536554507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11779758 + ... + 11815403.

It is an arithmetic number, because the mean of its divisors is an integer number (37823044686).

Almost surely, 2^420536554503 is an apocalyptic number.

420536554503 is a deficient number, since it is larger than the sum of its proper divisors (184632160473).

420536554503 is a wasteful number, since it uses less digits than its factorization.

420536554503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23595634.

The product of its (nonzero) digits is 1080000, while the sum is 42.

The spelling of 420536554503 in words is "four hundred twenty billion, five hundred thirty-six million, five hundred fifty-four thousand, five hundred three".