421960717511 has 4 divisors (see below), whose sum is σ = 422051019792. Its totient is φ = 421870415232.

The previous prime is 421960717459. The next prime is 421960717531. The reversal of 421960717511 is 115717069124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421960717511 - 2³⁴ = 404780848327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421960717531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45144131 + ... + 45153476.

It is an arithmetic number, because the mean of its divisors is an integer number (105512754948).

Almost surely, 2^421960717511 is an apocalyptic number.

421960717511 is a deficient number, since it is larger than the sum of its proper divisors (90302281).

421960717511 is an equidigital number, since it uses as much as digits as its factorization.

421960717511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90302280.

The product of its (nonzero) digits is 105840, while the sum is 44.

The spelling of 421960717511 in words is "four hundred twenty-one billion, nine hundred sixty million, seven hundred seventeen thousand, five hundred eleven".