561578612134 has 8 divisors (see below), whose sum is σ = 845892470880. Its totient is φ = 279614455176.

The previous prime is 561578612093. The next prime is 561578612143. The reversal of 561578612134 is 431216875165.

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

It is a super-2 number, since 2×561578612134² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587424849 + ... + 587425804.

It is an arithmetic number, because the mean of its divisors is an integer number (105736558860).

Almost surely, 2^561578612134 is an apocalyptic number.

561578612134 is a deficient number, since it is larger than the sum of its proper divisors (284313858746).

561578612134 is a wasteful number, since it uses less digits than its factorization.

561578612134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174850894.

The product of its digits is 1209600, while the sum is 49.

The spelling of 561578612134 in words is "five hundred sixty-one billion, five hundred seventy-eight million, six hundred twelve thousand, one hundred thirty-four".