611564502413 has 4 divisors (see below), whose sum is σ = 611568261948. Its totient is φ = 611560742880.

The previous prime is 611564502361. The next prime is 611564502433. The reversal of 611564502413 is 314205465116.

611564502413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 132614690569 + 478949811844 = 364163^2 + 692062^2 .

It is a cyclic number.

It is not a de Polignac number, because 611564502413 - 2⁶ = 611564502349 is a prime.

It is a super-2 number, since 2×611564502413² (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 (611564502433) 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, 1624178 + ... + 1964963.

It is an arithmetic number, because the mean of its divisors is an integer number (152892065487).

Almost surely, 2^611564502413 is an apocalyptic number.

It is an amenable number.

611564502413 is a deficient number, since it is larger than the sum of its proper divisors (3759535).

611564502413 is a wasteful number, since it uses less digits than its factorization.

611564502413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3759534.

The product of its (nonzero) digits is 86400, while the sum is 38.

Adding to 611564502413 its reverse (314205465116), we get a palindrome (925769967529).

The spelling of 611564502413 in words is "six hundred eleven billion, five hundred sixty-four million, five hundred two thousand, four hundred thirteen".