1051354565561 has 8 divisors (see below), whose sum is σ = 1144850707200. Its totient is φ = 961674593040.

The previous prime is 1051354565539. The next prime is 1051354565623. The reversal of 1051354565561 is 1655654531501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1051354565561 - 2⁶ = 1051354565497 is a prime.

It is a super-3 number, since 3×1051354565561³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1051354567561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954041705 + ... + 954042806.

It is an arithmetic number, because the mean of its divisors is an integer number (143106338400).

Almost surely, 2^{1051354565561} is an apocalyptic number.

It is an amenable number.

1051354565561 is a deficient number, since it is larger than the sum of its proper divisors (93496141639).

1051354565561 is a wasteful number, since it uses less digits than its factorization.

1051354565561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908084559.

The product of its (nonzero) digits is 1350000, while the sum is 47.

The spelling of 1051354565561 in words is "one trillion, fifty-one billion, three hundred fifty-four million, five hundred sixty-five thousand, five hundred sixty-one".