21450124310535 has 48 divisors (see below), whose sum is σ = 38094867521568. Its totient is φ = 11159334144000.

The previous prime is 21450124310533. The next prime is 21450124310551. The reversal of 21450124310535 is 53501342105412.

21450124310535 is a `hidden beast` number, since 2 + 1 + 4 + 501 + 2 + 43 + 105 + 3 + 5 = 666.

It is not a de Polignac number, because 21450124310535 - 2¹ = 21450124310533 is a prime.

It is a super-2 number, since 2×21450124310535² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21450124310535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21450124310533) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 5810866 + ... + 8755935.

It is an arithmetic number, because the mean of its divisors is an integer number (793643073366).

Almost surely, 2^{21450124310535} is an apocalyptic number.

21450124310535 is a deficient number, since it is larger than the sum of its proper divisors (16644743211033).

21450124310535 is a wasteful number, since it uses less digits than its factorization.

21450124310535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14567616 (or 14567613 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 21450124310535 its reverse (53501342105412), we get a palindrome (74951466415947).

The spelling of 21450124310535 in words is "twenty-one trillion, four hundred fifty billion, one hundred twenty-four million, three hundred ten thousand, five hundred thirty-five".