13665241531402 has 4 divisors (see below), whose sum is σ = 20497862297106. Its totient is φ = 6832620765700.

The previous prime is 13665241531391. The next prime is 13665241531423. The reversal of 13665241531402 is 20413514256631.

13665241531402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 11708037733401 + 1957203798001 = 3421701^2 + 1399001^2 .

It is a super-2 number, since 2×13665241531402² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3416310382849 + ... + 3416310382852.

Almost surely, 2^{13665241531402} is an apocalyptic number.

13665241531402 is a deficient number, since it is larger than the sum of its proper divisors (6832620765704).

13665241531402 is an equidigital number, since it uses as much as digits as its factorization.

13665241531402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6832620765703.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 13665241531402 in words is "thirteen trillion, six hundred sixty-five billion, two hundred forty-one million, five hundred thirty-one thousand, four hundred two".