261870662759 has 8 divisors (see below), whose sum is σ = 282063872640. Its totient is φ = 242318507256.

The previous prime is 261870662743. The next prime is 261870662771. The reversal of 261870662759 is 957266078162.

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

It is a cyclic number.

It is not a de Polignac number, because 261870662759 - 2⁴ = 261870662743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 261870662698 and 261870662707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261870662719) 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, 160262747 + ... + 160264380.

It is an arithmetic number, because the mean of its divisors is an integer number (35257984080).

Almost surely, 2^261870662759 is an apocalyptic number.

261870662759 is a deficient number, since it is larger than the sum of its proper divisors (20193209881).

261870662759 is a wasteful number, since it uses less digits than its factorization.

261870662759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320527189.

The product of its (nonzero) digits is 15240960, while the sum is 59.

The spelling of 261870662759 in words is "two hundred sixty-one billion, eight hundred seventy million, six hundred sixty-two thousand, seven hundred fifty-nine".