611606135551 has 8 divisors (see below), whose sum is σ = 658199082384. Its totient is φ = 566192757120.

The previous prime is 611606135537. The next prime is 611606135573. The reversal of 611606135551 is 155531606116.

611606135551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 611606135551 - 2³⁵ = 577246397183 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 (611606135521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294891025 + ... + 294893098.

It is an arithmetic number, because the mean of its divisors is an integer number (82274885298).

Almost surely, 2^611606135551 is an apocalyptic number.

611606135551 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

611606135551 is a deficient number, since it is larger than the sum of its proper divisors (46592946833).

611606135551 is a wasteful number, since it uses less digits than its factorization.

611606135551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589784201.

The product of its (nonzero) digits is 81000, while the sum is 40.

The spelling of 611606135551 in words is "six hundred eleven billion, six hundred six million, one hundred thirty-five thousand, five hundred fifty-one".