261425107672 has 8 divisors (see below), whose sum is σ = 490172076900. Its totient is φ = 130712553832.

The previous prime is 261425107649. The next prime is 261425107747. The reversal of 261425107672 is 276701524162.

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, 16339069222 + ... + 16339069237.

Almost surely, 2^261425107672 is an apocalyptic number.

It is an amenable number.

261425107672 is a deficient number, since it is larger than the sum of its proper divisors (228746969228).

261425107672 is a wasteful number, since it uses less digits than its factorization.

261425107672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32678138465 (or 32678138461 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 261425107672 in words is "two hundred sixty-one billion, four hundred twenty-five million, one hundred seven thousand, six hundred seventy-two".