261160081713418 has 4 divisors (see below), whose sum is σ = 391740122570130. Its totient is φ = 130580040856708.

The previous prime is 261160081713367. The next prime is 261160081713437. The reversal of 261160081713418 is 814317180061162.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 242679910206969 + 18480171506449 = 15578187^2 + 4298857^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65290020428353 + ... + 65290020428356.

Almost surely, 2^{261160081713418} is an apocalyptic number.

261160081713418 is a deficient number, since it is larger than the sum of its proper divisors (130580040856712).

261160081713418 is a wasteful number, since it uses less digits than its factorization.

261160081713418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130580040856711.

The product of its (nonzero) digits is 387072, while the sum is 49.

The spelling of 261160081713418 in words is "two hundred sixty-one trillion, one hundred sixty billion, eighty-one million, seven hundred thirteen thousand, four hundred eighteen".