20411566511402 has 16 divisors (see below), whose sum is σ = 33823539446400. Its totient is φ = 9160541931840.

The previous prime is 20411566511359. The next prime is 20411566511417.

20411566511402 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×20411566511402² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5872140527 + ... + 5872144002.

It is an arithmetic number, because the mean of its divisors is an integer number (2113971215400).

Almost surely, 2^{20411566511402} is an apocalyptic number.

20411566511402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20411566511402 is a deficient number, since it is larger than the sum of its proper divisors (13411972934998).

20411566511402 is a wasteful number, since it uses less digits than its factorization.

20411566511402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11744284621.

The product of its (nonzero) digits is 57600, while the sum is 38.

It can be divided in two parts, 2041156 and 6511402, that added together give a palindrome (8552558).

The spelling of 20411566511402 in words is "twenty trillion, four hundred eleven billion, five hundred sixty-six million, five hundred eleven thousand, four hundred two".