13540751665 has 8 divisors (see below), whose sum is σ = 18570173760. Its totient is φ = 9285086832.

The previous prime is 13540751663. The next prime is 13540751699. The reversal of 13540751665 is 56615704531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13540751665 - 2¹ = 13540751663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13540751663) 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, 193439275 + ... + 193439344.

It is an arithmetic number, because the mean of its divisors is an integer number (2321271720).

Almost surely, 2^13540751665 is an apocalyptic number.

It is an amenable number.

13540751665 is a deficient number, since it is larger than the sum of its proper divisors (5029422095).

13540751665 is an equidigital number, since it uses as much as digits as its factorization.

13540751665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386878631.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 13540751665 in words is "thirteen billion, five hundred forty million, seven hundred fifty-one thousand, six hundred sixty-five".