561264749061 has 16 divisors (see below), whose sum is σ = 750574434624. Its totient is φ = 373065969024.

The previous prime is 561264749053. The next prime is 561264749093. The reversal of 561264749061 is 160947462165.

It is a happy number.

It is not a de Polignac number, because 561264749061 - 2³ = 561264749053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561264748995 and 561264749013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561264749261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22549155 + ... + 22574031.

It is an arithmetic number, because the mean of its divisors is an integer number (46910902164).

Almost surely, 2^561264749061 is an apocalyptic number.

It is an amenable number.

561264749061 is a deficient number, since it is larger than the sum of its proper divisors (189309685563).

561264749061 is a wasteful number, since it uses less digits than its factorization.

561264749061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46900.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 561264749061 in words is "five hundred sixty-one billion, two hundred sixty-four million, seven hundred forty-nine thousand, sixty-one".