561613223154 has 32 divisors (see below), whose sum is σ = 1127659161600. Its totient is φ = 186466866192.

The previous prime is 561613223141. The next prime is 561613223189. The reversal of 561613223154 is 451322316165.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1657297 + ... + 1967195.

It is an arithmetic number, because the mean of its divisors is an integer number (35239348800).

Almost surely, 2^561613223154 is an apocalyptic number.

561613223154 is an abundant number, since it is smaller than the sum of its proper divisors (566045938446).

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

561613223154 is a wasteful number, since it uses less digits than its factorization.

561613223154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311094.

The product of its digits is 129600, while the sum is 39.

The spelling of 561613223154 in words is "five hundred sixty-one billion, six hundred thirteen million, two hundred twenty-three thousand, one hundred fifty-four".