611564422377673 has 4 divisors (see below), whose sum is σ = 624576431364480. Its totient is φ = 598552413390868.

The previous prime is 611564422377659. The next prime is 611564422377697. The reversal of 611564422377673 is 376773224465116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 611564422377673 - 2¹⁷ = 611564422246601 is a prime.

It is a super-2 number, since 2×611564422377673² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611564422377613) 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, 6506004493333 + ... + 6506004493426.

It is an arithmetic number, because the mean of its divisors is an integer number (156144107841120).

Almost surely, 2^{611564422377673} is an apocalyptic number.

It is an amenable number.

611564422377673 is a deficient number, since it is larger than the sum of its proper divisors (13012008986807).

611564422377673 is a wasteful number, since it uses less digits than its factorization.

611564422377673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13012008986806.

The product of its digits is 213373440, while the sum is 64.

The spelling of 611564422377673 in words is "six hundred eleven trillion, five hundred sixty-four billion, four hundred twenty-two million, three hundred seventy-seven thousand, six hundred seventy-three".