611452154561 has 2 divisors, whose sum is σ = 611452154562. Its totient is φ = 611452154560.

The previous prime is 611452154531. The next prime is 611452154597. The reversal of 611452154561 is 165451254116.

611452154561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372862890625 + 238589263936 = 610625^2 + 488456^2 .

It is a cyclic number.

It is not a de Polignac number, because 611452154561 - 2²² = 611447960257 is a prime.

It is not a weakly prime, because it can be changed into another prime (611452154531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305726077280 + 305726077281.

It is an arithmetic number, because the mean of its divisors is an integer number (305726077281).

Almost surely, 2^611452154561 is an apocalyptic number.

It is an amenable number.

611452154561 is a deficient number, since it is larger than the sum of its proper divisors (1).

611452154561 is an equidigital number, since it uses as much as digits as its factorization.

611452154561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144000, while the sum is 41.

The spelling of 611452154561 in words is "six hundred eleven billion, four hundred fifty-two million, one hundred fifty-four thousand, five hundred sixty-one".