420545496947 has 2 divisors, whose sum is σ = 420545496948. Its totient is φ = 420545496946.

The previous prime is 420545496893. The next prime is 420545496989. The reversal of 420545496947 is 749694545024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420545496947 - 2²⁴ = 420528719731 is a prime.

It is not a weakly prime, because it can be changed into another prime (420545496247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210272748473 + 210272748474.

It is an arithmetic number, because the mean of its divisors is an integer number (210272748474).

Almost surely, 2^420545496947 is an apocalyptic number.

420545496947 is a deficient number, since it is larger than the sum of its proper divisors (1).

420545496947 is an equidigital number, since it uses as much as digits as its factorization.

420545496947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43545600, while the sum is 59.

The spelling of 420545496947 in words is "four hundred twenty billion, five hundred forty-five million, four hundred ninety-six thousand, nine hundred forty-seven".