427320073073 has 4 divisors (see below), whose sum is σ = 427331574948. Its totient is φ = 427308571200.

The previous prime is 427320073069. The next prime is 427320073091. The reversal of 427320073073 is 370370023724.

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 373573996849 + 53746076224 = 611207^2 + 231832^2 .

It is a cyclic number.

It is not a de Polignac number, because 427320073073 - 2² = 427320073069 is a prime.

It is a super-2 number, since 2×427320073073² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427320073003) 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, 5695028 + ... + 5769573.

It is an arithmetic number, because the mean of its divisors is an integer number (106832893737).

Almost surely, 2^427320073073 is an apocalyptic number.

It is an amenable number.

427320073073 is a deficient number, since it is larger than the sum of its proper divisors (11501875).

427320073073 is a wasteful number, since it uses less digits than its factorization.

427320073073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11501874.

The product of its (nonzero) digits is 148176, while the sum is 38.

Adding to 427320073073 its reverse (370370023724), we get a palindrome (797690096797).

The spelling of 427320073073 in words is "four hundred twenty-seven billion, three hundred twenty million, seventy-three thousand, seventy-three".