13217615557001 has 4 divisors (see below), whose sum is σ = 13334585606292. Its totient is φ = 13100645507712.

The previous prime is 13217615556989. The next prime is 13217615557037. The reversal of 13217615557001 is 10075551671231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 501687473401 + 12715928083600 = 708299^2 + 3565940^2 .

It is a cyclic number.

It is not a de Polignac number, because 13217615557001 - 2¹⁴ = 13217615540617 is a prime.

It is a super-2 number, since 2×13217615557001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13217615557501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58485024476 + ... + 58485024701.

It is an arithmetic number, because the mean of its divisors is an integer number (3333646401573).

Almost surely, 2^{13217615557001} is an apocalyptic number.

It is an amenable number.

13217615557001 is a deficient number, since it is larger than the sum of its proper divisors (116970049291).

13217615557001 is a wasteful number, since it uses less digits than its factorization.

13217615557001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116970049290.

The product of its (nonzero) digits is 220500, while the sum is 44.

The spelling of 13217615557001 in words is "thirteen trillion, two hundred seventeen billion, six hundred fifteen million, five hundred fifty-seven thousand, one".