23540201555523 has 16 divisors (see below), whose sum is σ = 31405979404800. Its totient is φ = 15683947220384.

The previous prime is 23540201555477. The next prime is 23540201555561. The reversal of 23540201555523 is 32555510204532.

It is a cyclic number.

It is not a de Polignac number, because 23540201555523 - 2²⁹ = 23539664684611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23540201555623) 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, 64151590 + ... + 64517492.

It is an arithmetic number, because the mean of its divisors is an integer number (1962873712800).

Almost surely, 2^{23540201555523} is an apocalyptic number.

23540201555523 is a deficient number, since it is larger than the sum of its proper divisors (7865777849277).

23540201555523 is a wasteful number, since it uses less digits than its factorization.

23540201555523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378858.

The product of its (nonzero) digits is 900000, while the sum is 42.

The spelling of 23540201555523 in words is "twenty-three trillion, five hundred forty billion, two hundred one million, five hundred fifty-five thousand, five hundred twenty-three".