611403640219 has 2 divisors, whose sum is σ = 611403640220. Its totient is φ = 611403640218.

The previous prime is 611403640171. The next prime is 611403640231. The reversal of 611403640219 is 912046304116.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611403640219 is a prime.

It is a super-2 number, since 2×611403640219² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (611403640619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305701820109 + 305701820110.

It is an arithmetic number, because the mean of its divisors is an integer number (305701820110).

Almost surely, 2^611403640219 is an apocalyptic number.

611403640219 is a deficient number, since it is larger than the sum of its proper divisors (1).

611403640219 is an equidigital number, since it uses as much as digits as its factorization.

611403640219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 611403640219 in words is "six hundred eleven billion, four hundred three million, six hundred forty thousand, two hundred nineteen".