21441031252534 has 16 divisors (see below), whose sum is σ = 34054611197616. Its totient is φ = 10089538950400.

The previous prime is 21441031252477. The next prime is 21441031252549. The reversal of 21441031252534 is 43525213014412.

It is a junction number, because it is equal to n+sod(n) for n = 21441031252493 and 21441031252502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10217647 + ... + 12135994.

It is an arithmetic number, because the mean of its divisors is an integer number (2128413199851).

Almost surely, 2^{21441031252534} is an apocalyptic number.

21441031252534 is a deficient number, since it is larger than the sum of its proper divisors (12613579945082).

21441031252534 is a wasteful number, since it uses less digits than its factorization.

21441031252534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22381871.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 21441031252534 its reverse (43525213014412), we get a palindrome (64966244266946).

The spelling of 21441031252534 in words is "twenty-one trillion, four hundred forty-one billion, thirty-one million, two hundred fifty-two thousand, five hundred thirty-four".