421317442577 has 16 divisors (see below), whose sum is σ = 442691256960. Its totient is φ = 400638201600.

The previous prime is 421317442501. The next prime is 421317442583. The reversal of 421317442577 is 775244713124.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 421317442577 - 2¹⁴ = 421317426193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421317442597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 726824 + ... + 1170857.

It is an arithmetic number, because the mean of its divisors is an integer number (27668203560).

Almost surely, 2^421317442577 is an apocalyptic number.

It is an amenable number.

421317442577 is a deficient number, since it is larger than the sum of its proper divisors (21373814383).

421317442577 is a wasteful number, since it uses less digits than its factorization.

421317442577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897864.

The product of its digits is 1317120, while the sum is 47.

The spelling of 421317442577 in words is "four hundred twenty-one billion, three hundred seventeen million, four hundred forty-two thousand, five hundred seventy-seven".