23501051544561 has 16 divisors (see below), whose sum is σ = 31355990380800. Its totient is φ = 15656743162368.

The previous prime is 23501051544521. The next prime is 23501051544571. The reversal of 23501051544561 is 16544515010532.

It is not a de Polignac number, because 23501051544561 - 2⁶ = 23501051544497 is a prime.

It is a super-2 number, since 2×23501051544561² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23501051544521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31705185 + ... + 32437953.

It is an arithmetic number, because the mean of its divisors is an integer number (1959749398800).

Almost surely, 2^{23501051544561} is an apocalyptic number.

It is an amenable number.

23501051544561 is a deficient number, since it is larger than the sum of its proper divisors (7854938836239).

23501051544561 is a wasteful number, since it uses less digits than its factorization.

23501051544561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740008.

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 23501051544561 in words is "twenty-three trillion, five hundred one billion, fifty-one million, five hundred forty-four thousand, five hundred sixty-one".