23436011643 has 16 divisors (see below), whose sum is σ = 35882889600. Its totient is φ = 13456082880.

The previous prime is 23436011617. The next prime is 23436011659. The reversal of 23436011643 is 34611063432.

It is not a de Polignac number, because 23436011643 - 2⁵ = 23436011611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (23436011243) 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, 18688378 + ... + 18689631.

It is an arithmetic number, because the mean of its divisors is an integer number (2242680600).

Almost surely, 2^23436011643 is an apocalyptic number.

23436011643 is a deficient number, since it is larger than the sum of its proper divisors (12446877957).

23436011643 is a wasteful number, since it uses less digits than its factorization.

23436011643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37378042.

The product of its (nonzero) digits is 31104, while the sum is 33.

The spelling of 23436011643 in words is "twenty-three billion, four hundred thirty-six million, eleven thousand, six hundred forty-three".