23561265554611 has 4 divisors (see below), whose sum is σ = 23561414279424. Its totient is φ = 23561116829800.

The previous prime is 23561265554599. The next prime is 23561265554657. The reversal of 23561265554611 is 11645556216532.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23561265554611 - 2⁵ = 23561265554579 is a prime.

It is a super-2 number, since 2×23561265554611² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23561265554011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74124520 + ... + 74441701.

It is an arithmetic number, because the mean of its divisors is an integer number (5890353569856).

Almost surely, 2^{23561265554611} is an apocalyptic number.

23561265554611 is a deficient number, since it is larger than the sum of its proper divisors (148724813).

23561265554611 is a wasteful number, since it uses less digits than its factorization.

23561265554611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148724812.

The product of its digits is 6480000, while the sum is 52.

The spelling of 23561265554611 in words is "twenty-three trillion, five hundred sixty-one billion, two hundred sixty-five million, five hundred fifty-four thousand, six hundred eleven".