611421930667 has 2 divisors, whose sum is σ = 611421930668. Its totient is φ = 611421930666.

The previous prime is 611421930629. The next prime is 611421930671. The reversal of 611421930667 is 766039124116.

611421930667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 611421930667 - 2³⁹ = 61666116779 is a prime.

It is not a weakly prime, because it can be changed into another prime (611421930617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305710965333 + 305710965334.

It is an arithmetic number, because the mean of its divisors is an integer number (305710965334).

Almost surely, 2^611421930667 is an apocalyptic number.

611421930667 is a deficient number, since it is larger than the sum of its proper divisors (1).

611421930667 is an equidigital number, since it uses as much as digits as its factorization.

611421930667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 611421930667 in words is "six hundred eleven billion, four hundred twenty-one million, nine hundred thirty thousand, six hundred sixty-seven".