420307934996569 has 9 divisors (see below), whose sum is σ = 421489351093237. Its totient is φ = 419129821298524.

The previous prime is 420307934996561. The next prime is 420307934996603. The reversal of 420307934996569 is 965699439703024.

The square root of 420307934996569 is 20501413.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 420307934996569 - 2³ = 420307934996561 is a prime.

It is a super-2 number, since 2×420307934996569² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420307934996495 and 420307934996504.

It is not an unprimeable number, because it can be changed into a prime (420307934996561) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7359978714 + ... + 7360035820.

Almost surely, 2^{420307934996569} is an apocalyptic number.

420307934996569 is the 20501413-rd square number.

420307934996569 is the 10250707-th centered octagonal number.

It is an amenable number.

420307934996569 is a deficient number, since it is larger than the sum of its proper divisors (1181416096668).

420307934996569 is an frugal number, since it uses more digits than its factorization.

420307934996569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114932 (or 57466 counting only the distinct ones).

The product of its (nonzero) digits is 2380855680, while the sum is 76.

The spelling of 420307934996569 in words is "four hundred twenty trillion, three hundred seven billion, nine hundred thirty-four million, nine hundred ninety-six thousand, five hundred sixty-nine".