611221586554117 has 64 divisors (see below), whose sum is σ = 769603062251520. Its totient is φ = 471575466086400.

The previous prime is 611221586554109. The next prime is 611221586554127. The reversal of 611221586554117 is 711455685122116.

It is a cyclic number.

It is not a de Polignac number, because 611221586554117 - 2³ = 611221586554109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611221586554127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16268421942 + ... + 16268459512.

It is an arithmetic number, because the mean of its divisors is an integer number (12025047847680).

Almost surely, 2^{611221586554117} is an apocalyptic number.

It is an amenable number.

611221586554117 is a deficient number, since it is larger than the sum of its proper divisors (158381475697403).

611221586554117 is a wasteful number, since it uses less digits than its factorization.

611221586554117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42914.

The product of its digits is 4032000, while the sum is 55.

The spelling of 611221586554117 in words is "six hundred eleven trillion, two hundred twenty-one billion, five hundred eighty-six million, five hundred fifty-four thousand, one hundred seventeen".