561326666134 has 16 divisors (see below), whose sum is σ = 921623356080. Its totient is φ = 254826732960.

The previous prime is 561326666107. The next prime is 561326666137. The reversal of 561326666134 is 431666623165.

It is a super-2 number, since 2×561326666134² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561326666137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176961424 + ... + 176964595.

It is an arithmetic number, because the mean of its divisors is an integer number (57601459755).

Almost surely, 2^561326666134 is an apocalyptic number.

561326666134 is a deficient number, since it is larger than the sum of its proper divisors (360296689946).

561326666134 is a wasteful number, since it uses less digits than its factorization.

561326666134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353926095.

The product of its digits is 2799360, while the sum is 49.

The spelling of 561326666134 in words is "five hundred sixty-one billion, three hundred twenty-six million, six hundred sixty-six thousand, one hundred thirty-four".