420597699829 has 2 divisors, whose sum is σ = 420597699830. Its totient is φ = 420597699828.

The previous prime is 420597699827. The next prime is 420597699859. The reversal of 420597699829 is 928996795024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 410432422500 + 10165277329 = 640650^2 + 100823^2 .

It is a cyclic number.

It is not a de Polignac number, because 420597699829 - 2¹ = 420597699827 is a prime.

Together with 420597699827, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420597699827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210298849914 + 210298849915.

It is an arithmetic number, because the mean of its divisors is an integer number (210298849915).

Almost surely, 2^420597699829 is an apocalyptic number.

It is an amenable number.

420597699829 is a deficient number, since it is larger than the sum of its proper divisors (1).

420597699829 is an equidigital number, since it uses as much as digits as its factorization.

420597699829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176359680, while the sum is 70.

The spelling of 420597699829 in words is "four hundred twenty billion, five hundred ninety-seven million, six hundred ninety-nine thousand, eight hundred twenty-nine".