611438643243023 has 16 divisors (see below), whose sum is σ = 647007321169920. Its totient is φ = 576215625242016.

The previous prime is 611438643243011. The next prime is 611438643243053. The reversal of 611438643243023 is 320342346834116.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 611438643243023 - 2⁴ = 611438643243007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611438643243053) 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, 92502911 + ... + 98892192.

It is an arithmetic number, because the mean of its divisors is an integer number (40437957573120).

Almost surely, 2^{611438643243023} is an apocalyptic number.

611438643243023 is a deficient number, since it is larger than the sum of its proper divisors (35568677926897).

611438643243023 is a wasteful number, since it uses less digits than its factorization.

611438643243023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191396006.

The product of its (nonzero) digits is 5971968, while the sum is 50.

The spelling of 611438643243023 in words is "six hundred eleven trillion, four hundred thirty-eight billion, six hundred forty-three million, two hundred forty-three thousand, twenty-three".