611363640511 has 4 divisors (see below), whose sum is σ = 658391612872. Its totient is φ = 564335668152.

The previous prime is 611363640497. The next prime is 611363640521. The reversal of 611363640511 is 115046363116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 611363640511 - 2⁷ = 611363640383 is a prime.

It is a super-2 number, since 2×611363640511² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611363640521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23513986161 + ... + 23513986186.

It is an arithmetic number, because the mean of its divisors is an integer number (164597903218).

Almost surely, 2^611363640511 is an apocalyptic number.

611363640511 is a deficient number, since it is larger than the sum of its proper divisors (47027972361).

611363640511 is a wasteful number, since it uses less digits than its factorization.

611363640511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47027972360.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 611363640511 in words is "six hundred eleven billion, three hundred sixty-three million, six hundred forty thousand, five hundred eleven".