561255645007654 has 32 divisors (see below), whose sum is σ = 851612074500096. Its totient is φ = 277392175307520.

The previous prime is 561255645007643. The next prime is 561255645007667. The reversal of 561255645007654 is 456700546552165.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 561255645007592 and 561255645007601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1322995377 + ... + 1323419539.

It is an arithmetic number, because the mean of its divisors is an integer number (26612877328128).

Almost surely, 2^{561255645007654} is an apocalyptic number.

561255645007654 is a deficient number, since it is larger than the sum of its proper divisors (290356429492442).

561255645007654 is a wasteful number, since it uses less digits than its factorization.

561255645007654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432660.

The product of its (nonzero) digits is 151200000, while the sum is 61.

The spelling of 561255645007654 in words is "five hundred sixty-one trillion, two hundred fifty-five billion, six hundred forty-five million, seven thousand, six hundred fifty-four".