611816477089 has 2 divisors, whose sum is σ = 611816477090. Its totient is φ = 611816477088.

The previous prime is 611816477053. The next prime is 611816477147. The reversal of 611816477089 is 980774618116.

It is an a-pointer prime, because the next prime (611816477147) can be obtained adding 611816477089 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 603133964689 + 8682512400 = 776617^2 + 93180^2 .

It is a cyclic number.

It is not a de Polignac number, because 611816477089 - 2¹⁹ = 611815952801 is a prime.

It is not a weakly prime, because it can be changed into another prime (611816477689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305908238544 + 305908238545.

It is an arithmetic number, because the mean of its divisors is an integer number (305908238545).

Almost surely, 2^611816477089 is an apocalyptic number.

It is an amenable number.

611816477089 is a deficient number, since it is larger than the sum of its proper divisors (1).

611816477089 is an equidigital number, since it uses as much as digits as its factorization.

611816477089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4064256, while the sum is 58.

The spelling of 611816477089 in words is "six hundred eleven billion, eight hundred sixteen million, four hundred seventy-seven thousand, eighty-nine".