420045736501 has 4 divisors (see below), whose sum is σ = 431398324012. Its totient is φ = 408693148992.

The previous prime is 420045736471. The next prime is 420045736519. The reversal of 420045736501 is 105637540024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 285043871025 + 135001865476 = 533895^2 + 367426^2 .

It is a cyclic number.

It is not a de Polignac number, because 420045736501 - 2⁵ = 420045736469 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 11352587473 = 420045736501 / (4 + 2 + 0 + 0 + 4 + 5 + 7 + 3 + 6 + 5 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420045736571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5676293700 + ... + 5676293773.

It is an arithmetic number, because the mean of its divisors is an integer number (107849581003).

Almost surely, 2^420045736501 is an apocalyptic number.

It is an amenable number.

420045736501 is a deficient number, since it is larger than the sum of its proper divisors (11352587511).

420045736501 is a wasteful number, since it uses less digits than its factorization.

420045736501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11352587510.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 420045736501 in words is "four hundred twenty billion, forty-five million, seven hundred thirty-six thousand, five hundred one".