611254620989 has 2 divisors, whose sum is σ = 611254620990. Its totient is φ = 611254620988.

The previous prime is 611254620983. The next prime is 611254621027. The reversal of 611254620989 is 989026452116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 449101022500 + 162153598489 = 670150^2 + 402683^2 .

It is a cyclic number.

It is not a de Polignac number, because 611254620989 - 2⁴ = 611254620973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 611254620989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611254620983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305627310494 + 305627310495.

It is an arithmetic number, because the mean of its divisors is an integer number (305627310495).

Almost surely, 2^611254620989 is an apocalyptic number.

It is an amenable number.

611254620989 is a deficient number, since it is larger than the sum of its proper divisors (1).

611254620989 is an equidigital number, since it uses as much as digits as its factorization.

611254620989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 611254620989 in words is "six hundred eleven billion, two hundred fifty-four million, six hundred twenty thousand, nine hundred eighty-nine".