612143233681 has 8 divisors (see below), whose sum is σ = 700027620480. Its totient is φ = 524367685248.

The previous prime is 612143233609. The next prime is 612143233703. The reversal of 612143233681 is 186332341216.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 612143233681 - 2²⁵ = 612109679249 is a prime.

It is a super-2 number, since 2×612143233681² (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 (612143236681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27197536 + ... + 27220033.

It is an arithmetic number, because the mean of its divisors is an integer number (87503452560).

Almost surely, 2^612143233681 is an apocalyptic number.

It is an amenable number.

612143233681 is a deficient number, since it is larger than the sum of its proper divisors (87884386799).

612143233681 is a wasteful number, since it uses less digits than its factorization.

612143233681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54419183.

The product of its digits is 124416, while the sum is 40.

Adding to 612143233681 its reverse (186332341216), we get a palindrome (798475574897).

The spelling of 612143233681 in words is "six hundred twelve billion, one hundred forty-three million, two hundred thirty-three thousand, six hundred eighty-one".