420505115493 has 32 divisors (see below), whose sum is σ = 596166632064. Its totient is φ = 262730944512.

The previous prime is 420505115491. The next prime is 420505115509. The reversal of 420505115493 is 394511505024.

It is a happy number.

It is not a de Polignac number, because 420505115493 - 2¹ = 420505115491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420505115491) 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, 25236621 + ... + 25253277.

It is an arithmetic number, because the mean of its divisors is an integer number (18630207252).

Almost surely, 2^420505115493 is an apocalyptic number.

It is an amenable number.

420505115493 is a deficient number, since it is larger than the sum of its proper divisors (175661516571).

420505115493 is a wasteful number, since it uses less digits than its factorization.

420505115493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18741.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 420505115493 in words is "four hundred twenty billion, five hundred five million, one hundred fifteen thousand, four hundred ninety-three".