561155271706 has 4 divisors (see below), whose sum is σ = 841732907562. Its totient is φ = 280577635852.

The previous prime is 561155271661. The next prime is 561155271709. The reversal of 561155271706 is 607172551165.

561155271706 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 only one way, i.e., 462270809025 + 98884462681 = 679905^2 + 314459^2 .

It is not an unprimeable number, because it can be changed into a prime (561155271709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140288817925 + ... + 140288817928.

Almost surely, 2^561155271706 is an apocalyptic number.

561155271706 is a deficient number, since it is larger than the sum of its proper divisors (280577635856).

561155271706 is a wasteful number, since it uses less digits than its factorization.

561155271706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280577635855.

The product of its (nonzero) digits is 441000, while the sum is 46.

The spelling of 561155271706 in words is "five hundred sixty-one billion, one hundred fifty-five million, two hundred seventy-one thousand, seven hundred six".