611587421567 has 2 divisors, whose sum is σ = 611587421568. Its totient is φ = 611587421566.

The previous prime is 611587421563. The next prime is 611587421579. The reversal of 611587421567 is 765124785116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 611587421567 - 2² = 611587421563 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611587421563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305793710783 + 305793710784.

It is an arithmetic number, because the mean of its divisors is an integer number (305793710784).

Almost surely, 2^611587421567 is an apocalyptic number.

611587421567 is a deficient number, since it is larger than the sum of its proper divisors (1).

611587421567 is an equidigital number, since it uses as much as digits as its factorization.

611587421567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2822400, while the sum is 53.

The spelling of 611587421567 in words is "six hundred eleven billion, five hundred eighty-seven million, four hundred twenty-one thousand, five hundred sixty-seven".