23145155321044 has 24 divisors (see below), whose sum is σ = 40673136524328. Its totient is φ = 11524261647360.

The previous prime is 23145155320981. The next prime is 23145155321143. The reversal of 23145155321044 is 44012355154132.

It can be written as a sum of positive squares in 4 ways, for example, as 8593692250000 + 14551463071044 = 2931500^2 + 3814638^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23145155320988 and 23145155321006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39810912 + ... + 40388104.

It is an arithmetic number, because the mean of its divisors is an integer number (1694714021847).

Almost surely, 2^{23145155321044} is an apocalyptic number.

It is an amenable number.

23145155321044 is a deficient number, since it is larger than the sum of its proper divisors (17527981203284).

23145155321044 is a wasteful number, since it uses less digits than its factorization.

23145155321044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619035 (or 619033 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 23145155321044 in words is "twenty-three trillion, one hundred forty-five billion, one hundred fifty-five million, three hundred twenty-one thousand, forty-four".