421562879911 has 2 divisors, whose sum is σ = 421562879912. Its totient is φ = 421562879910.

The previous prime is 421562879891. The next prime is 421562880017. The reversal of 421562879911 is 119978265124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421562879911 - 2⁵ = 421562879879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421562879611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210781439955 + 210781439956.

It is an arithmetic number, because the mean of its divisors is an integer number (210781439956).

Almost surely, 2^421562879911 is an apocalyptic number.

421562879911 is a deficient number, since it is larger than the sum of its proper divisors (1).

421562879911 is an equidigital number, since it uses as much as digits as its factorization.

421562879911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 55.

The spelling of 421562879911 in words is "four hundred twenty-one billion, five hundred sixty-two million, eight hundred seventy-nine thousand, nine hundred eleven".