611231543255 has 4 divisors (see below), whose sum is σ = 733477851912. Its totient is φ = 488985234600.

The previous prime is 611231543249. The next prime is 611231543323. The reversal of 611231543255 is 552345132116.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 611231543255 - 2⁴ = 611231543239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61123154321 + ... + 61123154330.

It is an arithmetic number, because the mean of its divisors is an integer number (183369462978).

Almost surely, 2^611231543255 is an apocalyptic number.

611231543255 is a deficient number, since it is larger than the sum of its proper divisors (122246308657).

611231543255 is a wasteful number, since it uses less digits than its factorization.

611231543255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122246308656.

The product of its digits is 108000, while the sum is 38.

The spelling of 611231543255 in words is "six hundred eleven billion, two hundred thirty-one million, five hundred forty-three thousand, two hundred fifty-five".