420998695087 has 2 divisors, whose sum is σ = 420998695088. Its totient is φ = 420998695086.

The previous prime is 420998695031. The next prime is 420998695109. The reversal of 420998695087 is 780596899024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420998695087 - 2²³ = 420990306479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420998695787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210499347543 + 210499347544.

It is an arithmetic number, because the mean of its divisors is an integer number (210499347544).

Almost surely, 2^420998695087 is an apocalyptic number.

420998695087 is a deficient number, since it is larger than the sum of its proper divisors (1).

420998695087 is an equidigital number, since it uses as much as digits as its factorization.

420998695087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78382080, while the sum is 67.

The spelling of 420998695087 in words is "four hundred twenty billion, nine hundred ninety-eight million, six hundred ninety-five thousand, eighty-seven".