12572172344 has 8 divisors (see below), whose sum is σ = 23572823160. Its totient is φ = 6286086168.

The previous prime is 12572172287. The next prime is 12572172373. The reversal of 12572172344 is 44327127521.

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

It is a junction number, because it is equal to n+sod(n) for n = 12572172298 and 12572172307.

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, 785760764 + ... + 785760779.

It is an arithmetic number, because the mean of its divisors is an integer number (2946602895).

Almost surely, 2^12572172344 is an apocalyptic number.

It is an amenable number.

12572172344 is a deficient number, since it is larger than the sum of its proper divisors (11000650816).

12572172344 is a wasteful number, since it uses less digits than its factorization.

12572172344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571521549 (or 1571521545 counting only the distinct ones).

The product of its digits is 94080, while the sum is 38.

Adding to 12572172344 its reverse (44327127521), we get a palindrome (56899299865).

The spelling of 12572172344 in words is "twelve billion, five hundred seventy-two million, one hundred seventy-two thousand, three hundred forty-four".