423476856681 has 16 divisors (see below), whose sum is σ = 595805258880. Its totient is φ = 267009015680.

The previous prime is 423476856659. The next prime is 423476856683. The reversal of 423476856681 is 186658674324.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 423476856681 - 2¹⁰ = 423476855657 is a prime.

It is a super-2 number, since 2×423476856681² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (423476856683) 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, 34473330 + ... + 34485611.

It is an arithmetic number, because the mean of its divisors is an integer number (37237828680).

Almost surely, 2^423476856681 is an apocalyptic number.

It is an amenable number.

423476856681 is a deficient number, since it is larger than the sum of its proper divisors (172328402199).

423476856681 is a wasteful number, since it uses less digits than its factorization.

423476856681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68959056.

The product of its digits is 46448640, while the sum is 60.

The spelling of 423476856681 in words is "four hundred twenty-three billion, four hundred seventy-six million, eight hundred fifty-six thousand, six hundred eighty-one".