20352432511 has 16 divisors (see below), whose sum is σ = 21175676928. Its totient is φ = 19540231200.

The previous prime is 20352432467. The next prime is 20352432523. The reversal of 20352432511 is 11523425302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20352432511 is a prime.

It is a super-2 number, since 2×20352432511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20352432511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20352432571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2056906 + ... + 2066776.

It is an arithmetic number, because the mean of its divisors is an integer number (1323479808).

Almost surely, 2^20352432511 is an apocalyptic number.

20352432511 is a deficient number, since it is larger than the sum of its proper divisors (823244417).

20352432511 is a wasteful number, since it uses less digits than its factorization.

20352432511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10422.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 20352432511 its reverse (11523425302), we get a palindrome (31875857813).

The spelling of 20352432511 in words is "twenty billion, three hundred fifty-two million, four hundred thirty-two thousand, five hundred eleven".