261870543307 has 8 divisors (see below), whose sum is σ = 262000038960. Its totient is φ = 261741087840.

The previous prime is 261870543299. The next prime is 261870543313. The reversal of 261870543307 is 703345078162.

It is a happy number.

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 261870543307 - 2³ = 261870543299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261870543317) 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, 32449869 + ... + 32457937.

It is an arithmetic number, because the mean of its divisors is an integer number (32750004870).

Almost surely, 2^261870543307 is an apocalyptic number.

261870543307 is a deficient number, since it is larger than the sum of its proper divisors (129495653).

261870543307 is an equidigital number, since it uses as much as digits as its factorization.

261870543307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20093.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 261870543307 in words is "two hundred sixty-one billion, eight hundred seventy million, five hundred forty-three thousand, three hundred seven".