20353432413487 has 2 divisors, whose sum is σ = 20353432413488. Its totient is φ = 20353432413486.

The previous prime is 20353432413463. The next prime is 20353432413527. The reversal of 20353432413487 is 78431423435302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20353432413487 - 2¹⁵ = 20353432380719 is a prime.

It is a super-2 number, since 2×20353432413487² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20353432413487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20353432413187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10176716206743 + 10176716206744.

It is an arithmetic number, because the mean of its divisors is an integer number (10176716206744).

Almost surely, 2^{20353432413487} is an apocalyptic number.

20353432413487 is a deficient number, since it is larger than the sum of its proper divisors (1).

20353432413487 is an equidigital number, since it uses as much as digits as its factorization.

20353432413487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5806080, while the sum is 49.

Adding to 20353432413487 its reverse (78431423435302), we get a palindrome (98784855848789).

The spelling of 20353432413487 in words is "twenty trillion, three hundred fifty-three billion, four hundred thirty-two million, four hundred thirteen thousand, four hundred eighty-seven".