611244136645 has 16 divisors (see below), whose sum is σ = 764650621440. Its totient is φ = 468535896000.

The previous prime is 611244136639. The next prime is 611244136669. The reversal of 611244136645 is 546631442116.

611244136645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-611244136645 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19506675 + ... + 19537984.

It is an arithmetic number, because the mean of its divisors is an integer number (47790663840).

Almost surely, 2^611244136645 is an apocalyptic number.

It is an amenable number.

611244136645 is a deficient number, since it is larger than the sum of its proper divisors (153406484795).

611244136645 is a wasteful number, since it uses less digits than its factorization.

611244136645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39044796.

The product of its digits is 414720, while the sum is 43.

The spelling of 611244136645 in words is "six hundred eleven billion, two hundred forty-four million, one hundred thirty-six thousand, six hundred forty-five".