20353432413551 has 24 divisors (see below), whose sum is σ = 21955990240800. Its totient is φ = 18843190833600.

The previous prime is 20353432413527. The next prime is 20353432413631. The reversal of 20353432413551 is 15531423435302.

It is not a de Polignac number, because 20353432413551 - 2⁶ = 20353432413487 is a prime.

It is a super-2 number, since 2×20353432413551² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20353432413499 and 20353432413508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20353432413851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 312395 + ... + 6387836.

It is an arithmetic number, because the mean of its divisors is an integer number (914832926700).

Almost surely, 2^{20353432413551} is an apocalyptic number.

20353432413551 is a deficient number, since it is larger than the sum of its proper divisors (1602557827249).

20353432413551 is a wasteful number, since it uses less digits than its factorization.

20353432413551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700431 (or 6700400 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 41.

Adding to 20353432413551 its reverse (15531423435302), we get a palindrome (35884855848853).

The spelling of 20353432413551 in words is "twenty trillion, three hundred fifty-three billion, four hundred thirty-two million, four hundred thirteen thousand, five hundred fifty-one".