13587240497 has 12 divisors (see below), whose sum is σ = 14444956260. Its totient is φ = 12780301344.

The previous prime is 13587240493. The next prime is 13587240509. The reversal of 13587240497 is 79404278531.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 7478098576 + 6109141921 = 86476^2 + 78161^2 .

It is not a de Polignac number, because 13587240497 - 2² = 13587240493 is a prime.

It is a super-2 number, since 2×13587240497² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13587240493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8169488 + ... + 8171150.

It is an arithmetic number, because the mean of its divisors is an integer number (1203746355).

Almost surely, 2^13587240497 is an apocalyptic number.

13587240497 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13587240497 is a deficient number, since it is larger than the sum of its proper divisors (857715763).

13587240497 is an frugal number, since it uses more digits than its factorization.

13587240497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3377 (or 1680 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 13587240497 in words is "thirteen billion, five hundred eighty-seven million, two hundred forty thousand, four hundred ninety-seven".