611645675641 has 24 divisors (see below), whose sum is σ = 835895398464. Its totient is φ = 439944936480.

The previous prime is 611645675639. The next prime is 611645675657. The reversal of 611645675641 is 146576546116.

611645675641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 611645675641 - 2¹ = 611645675639 is a prime.

It is a super-2 number, since 2×611645675641² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (611645675621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43638325 + ... + 43652338.

It is an arithmetic number, because the mean of its divisors is an integer number (34828974936).

Almost surely, 2^611645675641 is an apocalyptic number.

It is an amenable number.

611645675641 is a deficient number, since it is larger than the sum of its proper divisors (224249722823).

611645675641 is a wasteful number, since it uses less digits than its factorization.

611645675641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87290701 (or 87290694 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 52.

The spelling of 611645675641 in words is "six hundred eleven billion, six hundred forty-five million, six hundred seventy-five thousand, six hundred forty-one".