611564544242 has 8 divisors (see below), whose sum is σ = 942139973676. Its totient is φ = 297517886352.

The previous prime is 611564544233. The next prime is 611564544257. The reversal of 611564544242 is 242445465116.

It can be written as a sum of positive squares in 2 ways, for example, as 504073020361 + 107491523881 = 709981^2 + 327859^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×611564544242² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 611564544193 and 611564544202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4132192793 + ... + 4132192940.

Almost surely, 2^611564544242 is an apocalyptic number.

611564544242 is a deficient number, since it is larger than the sum of its proper divisors (330575429434).

611564544242 is a wasteful number, since it uses less digits than its factorization.

611564544242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8264385772.

The product of its digits is 921600, while the sum is 44.

The spelling of 611564544242 in words is "six hundred eleven billion, five hundred sixty-four million, five hundred forty-four thousand, two hundred forty-two".