21140126514460 has 12 divisors (see below), whose sum is σ = 44394265680408. Its totient is φ = 8456050605776.

The previous prime is 21140126514391. The next prime is 21140126514469. The reversal of 21140126514460 is 6441562104112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21140126514469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528503162842 + ... + 528503162881.

It is an arithmetic number, because the mean of its divisors is an integer number (3699522140034).

Almost surely, 2^{21140126514460} is an apocalyptic number.

21140126514460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21140126514460 is an abundant number, since it is smaller than the sum of its proper divisors (23254139165948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21140126514460 is a wasteful number, since it uses less digits than its factorization.

21140126514460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057006325732 (or 1057006325730 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

Adding to 21140126514460 its reverse (6441562104112), we get a palindrome (27581688618572).

The spelling of 21140126514460 in words is "twenty-one trillion, one hundred forty billion, one hundred twenty-six million, five hundred fourteen thousand, four hundred sixty".