561557116429 has 8 divisors (see below), whose sum is σ = 562187547648. Its totient is φ = 560926821840.

The previous prime is 561557116427. The next prime is 561557116457. The reversal of 561557116429 is 924611755165.

561557116429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 561557116429 - 2¹ = 561557116427 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561557116427) 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, 9732864 + ... + 9790390.

It is an arithmetic number, because the mean of its divisors is an integer number (70273443456).

Almost surely, 2^561557116429 is an apocalyptic number.

It is an amenable number.

561557116429 is a deficient number, since it is larger than the sum of its proper divisors (630431219).

561557116429 is an equidigital number, since it uses as much as digits as its factorization.

561557116429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68315.

The product of its digits is 2268000, while the sum is 52.

The spelling of 561557116429 in words is "five hundred sixty-one billion, five hundred fifty-seven million, one hundred sixteen thousand, four hundred twenty-nine".