561352165345345 has 32 divisors (see below), whose sum is σ = 760226821297920. Its totient is φ = 394164960887040.

The previous prime is 561352165345319. The next prime is 561352165345373. The reversal of 561352165345345 is 543543561253165.

It is a happy number.

It is not a de Polignac number, because 561352165345345 - 2¹⁹ = 561352164821057 is a prime.

It is a super-2 number, since 2×561352165345345² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 561352165345345.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41218492 + ... + 53119378.

It is an arithmetic number, because the mean of its divisors is an integer number (23757088165560).

Almost surely, 2^{561352165345345} is an apocalyptic number.

561352165345345 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

561352165345345 is a deficient number, since it is larger than the sum of its proper divisors (198874655952575).

561352165345345 is a wasteful number, since it uses less digits than its factorization.

561352165345345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11930505.

The product of its digits is 97200000, while the sum is 58.

The spelling of 561352165345345 in words is "five hundred sixty-one trillion, three hundred fifty-two billion, one hundred sixty-five million, three hundred forty-five thousand, three hundred forty-five".