23020061550 has 24 divisors (see below), whose sum is σ = 57089753016. Its totient is φ = 6138683040.

The previous prime is 23020061527. The next prime is 23020061551. The reversal of 23020061550 is 5516002032.

It is a self number, because there is not a number n which added to its sum of digits gives 23020061550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23020061551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76733389 + ... + 76733688.

It is an arithmetic number, because the mean of its divisors is an integer number (2378739709).

Almost surely, 2^23020061550 is an apocalyptic number.

23020061550 is an abundant number, since it is smaller than the sum of its proper divisors (34069691466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23020061550 is a wasteful number, since it uses less digits than its factorization.

23020061550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153467092 (or 153467087 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 23020061550 its reverse (5516002032), we get a palindrome (28536063582).

The spelling of 23020061550 in words is "twenty-three billion, twenty million, sixty-one thousand, five hundred fifty".