21640415014130 has 128 divisors (see below), whose sum is σ = 46688806010880. Its totient is φ = 7128863343360.

The previous prime is 21640415014129. The next prime is 21640415014147. The reversal of 21640415014130 is 3141051404612.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 169767599 + ... + 169895021.

It is an arithmetic number, because the mean of its divisors is an integer number (364756296960).

Almost surely, 2^{21640415014130} is an apocalyptic number.

21640415014130 is an abundant number, since it is smaller than the sum of its proper divisors (25048390996750).

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

21640415014130 is a wasteful number, since it uses less digits than its factorization.

21640415014130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131016.

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 21640415014130 its reverse (3141051404612), we get a palindrome (24781466418742).

The spelling of 21640415014130 in words is "twenty-one trillion, six hundred forty billion, four hundred fifteen million, fourteen thousand, one hundred thirty".