420265204356365 has 4 divisors (see below), whose sum is σ = 504318245227644. Its totient is φ = 336212163485088.

The previous prime is 420265204356343. The next prime is 420265204356427. The reversal of 420265204356365 is 563653402562024.

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 56825333674564 + 363439870681801 = 7538258^2 + 19064099^2 .

It is a cyclic number.

It is not a de Polignac number, because 420265204356365 - 2⁴⁰ = 419165692728589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42026520435632 + ... + 42026520435641.

It is an arithmetic number, because the mean of its divisors is an integer number (126079561306911).

Almost surely, 2^{420265204356365} is an apocalyptic number.

It is an amenable number.

420265204356365 is a deficient number, since it is larger than the sum of its proper divisors (84053040871279).

420265204356365 is an equidigital number, since it uses as much as digits as its factorization.

420265204356365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84053040871278.

The product of its (nonzero) digits is 31104000, while the sum is 53.

The spelling of 420265204356365 in words is "four hundred twenty trillion, two hundred sixty-five billion, two hundred four million, three hundred fifty-six thousand, three hundred sixty-five".