21764033411043 has 32 divisors (see below), whose sum is σ = 36861798339072. Its totient is φ = 11092670784000.

The previous prime is 21764033411033. The next prime is 21764033411047. The reversal of 21764033411043 is 34011433046712.

It is a happy number.

It is not a de Polignac number, because 21764033411043 - 2⁴ = 21764033411027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21764033410992 and 21764033411010.

It is not an unprimeable number, because it can be changed into a prime (21764033411047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 888823558 + ... + 888848043.

It is an arithmetic number, because the mean of its divisors is an integer number (1151931198096).

Almost surely, 2^{21764033411043} is an apocalyptic number.

21764033411043 is a deficient number, since it is larger than the sum of its proper divisors (15097764928029).

21764033411043 is a wasteful number, since it uses less digits than its factorization.

21764033411043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777671675.

The product of its (nonzero) digits is 145152, while the sum is 39.

Adding to 21764033411043 its reverse (34011433046712), we get a palindrome (55775466457755).

The spelling of 21764033411043 in words is "twenty-one trillion, seven hundred sixty-four billion, thirty-three million, four hundred eleven thousand, forty-three".