612163221632623 has 4 divisors (see below), whose sum is σ = 618474182680480. Its totient is φ = 605852260584768.

The previous prime is 612163221632597. The next prime is 612163221632647. The reversal of 612163221632623 is 326236122361216.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612163221632623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612163221632023) 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, 3155480523783 + ... + 3155480523976.

It is an arithmetic number, because the mean of its divisors is an integer number (154618545670120).

Almost surely, 2^{612163221632623} is an apocalyptic number.

612163221632623 is a deficient number, since it is larger than the sum of its proper divisors (6310961047857).

612163221632623 is an equidigital number, since it uses as much as digits as its factorization.

612163221632623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6310961047856.

The product of its digits is 1119744, while the sum is 46.

Adding to 612163221632623 its reverse (326236122361216), we get a palindrome (938399343993839).

The spelling of 612163221632623 in words is "six hundred twelve trillion, one hundred sixty-three billion, two hundred twenty-one million, six hundred thirty-two thousand, six hundred twenty-three".