1660506115501 has 8 divisors (see below), whose sum is σ = 1733818828320. Its totient is φ = 1588263661488.

The previous prime is 1660506115447. The next prime is 1660506115517. The reversal of 1660506115501 is 1055116050661.

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 1660506115501 - 2¹⁵ = 1660506082733 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 (1660506118501) 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, 267561531 + ... + 267567736.

It is an arithmetic number, because the mean of its divisors is an integer number (216727353540).

Almost surely, 2^{1660506115501} is an apocalyptic number.

It is an amenable number.

1660506115501 is a deficient number, since it is larger than the sum of its proper divisors (73312712819).

1660506115501 is a wasteful number, since it uses less digits than its factorization.

1660506115501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535129403.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 1660506115501 in words is "one trillion, six hundred sixty billion, five hundred six million, one hundred fifteen thousand, five hundred one".