2661761015 has 8 divisors (see below), whose sum is σ = 3362224560. Its totient is φ = 2017334592.

The previous prime is 2661760999. The next prime is 2661761021. The reversal of 2661761015 is 5101671662.

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 2661761015 - 2⁴ = 2661760999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14009174 + ... + 14009363.

It is an arithmetic number, because the mean of its divisors is an integer number (420278070).

Almost surely, 2^2661761015 is an apocalyptic number.

2661761015 is a deficient number, since it is larger than the sum of its proper divisors (700463545).

2661761015 is a wasteful number, since it uses less digits than its factorization.

2661761015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28018561.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 2661761015 is about 51592.2573163842. The cubic root of 2661761015 is about 1385.8716795065.

The spelling of 2661761015 in words is "two billion, six hundred sixty-one million, seven hundred sixty-one thousand, fifteen".