611412655551 has 24 divisors (see below), whose sum is σ = 881588485680. Its totient is φ = 376441946496.

The previous prime is 611412655487. The next prime is 611412655561. The reversal of 611412655551 is 155556214116.

It is not a de Polignac number, because 611412655551 - 2⁶ = 611412655487 is a prime.

It is a super-2 number, since 2×611412655551² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611412655561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6596446 + ... + 6688491.

It is an arithmetic number, because the mean of its divisors is an integer number (36732853570).

Almost surely, 2^611412655551 is an apocalyptic number.

611412655551 is a deficient number, since it is larger than the sum of its proper divisors (270175830129).

611412655551 is a wasteful number, since it uses less digits than its factorization.

611412655551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13285015 (or 13284992 counting only the distinct ones).

The product of its digits is 180000, while the sum is 42.

Adding to 611412655551 its reverse (155556214116), we get a palindrome (766968869667).

The spelling of 611412655551 in words is "six hundred eleven billion, four hundred twelve million, six hundred fifty-five thousand, five hundred fifty-one".