23155443512 has 8 divisors (see below), whose sum is σ = 43416456600. Its totient is φ = 11577721752.

The previous prime is 23155443481. The next prime is 23155443551. The reversal of 23155443512 is 21534455132.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1447215212 + ... + 1447215227.

It is an arithmetic number, because the mean of its divisors is an integer number (5427057075).

Almost surely, 2^23155443512 is an apocalyptic number.

It is an amenable number.

23155443512 is a deficient number, since it is larger than the sum of its proper divisors (20261013088).

23155443512 is a wasteful number, since it uses less digits than its factorization.

23155443512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2894430445 (or 2894430441 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

Adding to 23155443512 its reverse (21534455132), we get a palindrome (44689898644).

The spelling of 23155443512 in words is "twenty-three billion, one hundred fifty-five million, four hundred forty-three thousand, five hundred twelve".