2661335031517 has 8 divisors (see below), whose sum is σ = 2817907819776. Its totient is φ = 2504764873152.

The previous prime is 2661335031473. The next prime is 2661335031539. The reversal of 2661335031517 is 7151305331662.

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 2661335031517 - 2¹⁹ = 2661334507229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661335031217) 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, 1659238 + ... + 2841784.

It is an arithmetic number, because the mean of its divisors is an integer number (352238477472).

Almost surely, 2^{2661335031517} is an apocalyptic number.

It is an amenable number.

2661335031517 is a deficient number, since it is larger than the sum of its proper divisors (156572788259).

2661335031517 is a wasteful number, since it uses less digits than its factorization.

2661335031517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314947.

The product of its (nonzero) digits is 340200, while the sum is 43.

The spelling of 2661335031517 in words is "two trillion, six hundred sixty-one billion, three hundred thirty-five million, thirty-one thousand, five hundred seventeen".