611380223991 has 12 divisors (see below), whose sum is σ = 893027294640. Its totient is φ = 403007188320.

The previous prime is 611380223879. The next prime is 611380224011. The reversal of 611380223991 is 199322083116.

It is a happy number.

611380223991 is a `hidden beast` number, since 611 + 3 + 8 + 0 + 2 + 23 + 9 + 9 + 1 = 666.

It is not a de Polignac number, because 611380223991 - 2¹¹ = 611380221943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611380223191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 381634795 + ... + 381636396.

It is an arithmetic number, because the mean of its divisors is an integer number (74418941220).

Almost surely, 2^611380223991 is an apocalyptic number.

611380223991 is a deficient number, since it is larger than the sum of its proper divisors (281647070649).

611380223991 is a wasteful number, since it uses less digits than its factorization.

611380223991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763271286 (or 763271283 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 611380223991 in words is "six hundred eleven billion, three hundred eighty million, two hundred twenty-three thousand, nine hundred ninety-one".