561627979242 has 32 divisors (see below), whose sum is σ = 1225615394304. Its totient is φ = 170156233200.

The previous prime is 561627979229. The next prime is 561627979243. The reversal of 561627979242 is 242979726165.

It is a happy number.

561627979242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (561627979243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 518358 + ... + 1179809.

It is an arithmetic number, because the mean of its divisors is an integer number (38300481072).

Almost surely, 2^561627979242 is an apocalyptic number.

561627979242 is an abundant number, since it is smaller than the sum of its proper divisors (663987415062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561627979242 is a wasteful number, since it uses less digits than its factorization.

561627979242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703194.

The product of its digits is 22861440, while the sum is 60.

The spelling of 561627979242 in words is "five hundred sixty-one billion, six hundred twenty-seven million, nine hundred seventy-nine thousand, two hundred forty-two".