420545770623 has 12 divisors (see below), whose sum is σ = 662678184168. Its totient is φ = 254876224560.

The previous prime is 420545770607. The next prime is 420545770661. The reversal of 420545770623 is 326077545024.

420545770623 is a `hidden beast` number, since 4 + 2 + 0 + 54 + 577 + 0 + 6 + 23 = 666.

It is not a de Polignac number, because 420545770623 - 2⁴ = 420545770607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420545770523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2123968440 + ... + 2123968637.

It is an arithmetic number, because the mean of its divisors is an integer number (55223182014).

Almost surely, 2^420545770623 is an apocalyptic number.

420545770623 is a deficient number, since it is larger than the sum of its proper divisors (242132413545).

420545770623 is a wasteful number, since it uses less digits than its factorization.

420545770623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247937094 (or 4247937091 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 45.

The spelling of 420545770623 in words is "four hundred twenty billion, five hundred forty-five million, seven hundred seventy thousand, six hundred twenty-three".