20345030521432 has 16 divisors (see below), whose sum is σ = 38194795391760. Its totient is φ = 10159751750304.

The previous prime is 20345030521411. The next prime is 20345030521481. The reversal of 20345030521432 is 23412503054302.

It is a super-2 number, since 2×20345030521432² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1595432028 + ... + 1595444779.

It is an arithmetic number, because the mean of its divisors is an integer number (2387174711985).

Almost surely, 2^{20345030521432} is an apocalyptic number.

It is an amenable number.

20345030521432 is a deficient number, since it is larger than the sum of its proper divisors (17849764870328).

20345030521432 is a wasteful number, since it uses less digits than its factorization.

20345030521432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3190877610 (or 3190877606 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 20345030521432 its reverse (23412503054302), we get a palindrome (43757533575734).

The spelling of 20345030521432 in words is "twenty trillion, three hundred forty-five billion, thirty million, five hundred twenty-one thousand, four hundred thirty-two".