131022444664 has 8 divisors (see below), whose sum is σ = 245667083760. Its totient is φ = 65511222328.

The previous prime is 131022444653. The next prime is 131022444689. The reversal of 131022444664 is 466444220131.

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, 8188902784 + ... + 8188902799.

It is an arithmetic number, because the mean of its divisors is an integer number (30708385470).

Almost surely, 2^131022444664 is an apocalyptic number.

It is an amenable number.

131022444664 is a deficient number, since it is larger than the sum of its proper divisors (114644639096).

131022444664 is a wasteful number, since it uses less digits than its factorization.

131022444664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16377805589 (or 16377805585 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 37.

Adding to 131022444664 its reverse (466444220131), we get a palindrome (597466664795).

The spelling of 131022444664 in words is "one hundred thirty-one billion, twenty-two million, four hundred forty-four thousand, six hundred sixty-four".