427023912961 has 4 divisors (see below), whose sum is σ = 427062129732. Its totient is φ = 426985696192.

The previous prime is 427023912919. The next prime is 427023912967. The reversal of 427023912961 is 169219320724.

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

It can be written as a sum of positive squares in 2 ways, for example, as 243127886400 + 183896026561 = 493080^2 + 428831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427023912961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427023912967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19091620 + ... + 19113973.

It is an arithmetic number, because the mean of its divisors is an integer number (106765532433).

Almost surely, 2^427023912961 is an apocalyptic number.

It is an amenable number.

427023912961 is a deficient number, since it is larger than the sum of its proper divisors (38216771).

427023912961 is a wasteful number, since it uses less digits than its factorization.

427023912961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38216770.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 427023912961 in words is "four hundred twenty-seven billion, twenty-three million, nine hundred twelve thousand, nine hundred sixty-one".