261112701387 has 8 divisors (see below), whose sum is σ = 348365050000. Its totient is φ = 173967743520.

The previous prime is 261112701331. The next prime is 261112701389. The reversal of 261112701387 is 783107211162.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 261112701387 - 2⁶ = 261112701323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261112701389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26842012 + ... + 26851737.

It is an arithmetic number, because the mean of its divisors is an integer number (43545631250).

Almost surely, 2^261112701387 is an apocalyptic number.

261112701387 is a deficient number, since it is larger than the sum of its proper divisors (87252348613).

261112701387 is a wasteful number, since it uses less digits than its factorization.

261112701387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53695373.

The product of its (nonzero) digits is 28224, while the sum is 39.

The spelling of 261112701387 in words is "two hundred sixty-one billion, one hundred twelve million, seven hundred one thousand, three hundred eighty-seven".