21534472107140 has 24 divisors (see below), whose sum is σ = 45222491885760. Its totient is φ = 8613769707488.

The previous prime is 21534472107133. The next prime is 21534472107251. The reversal of 21534472107140 is 4170127443512.

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, 11131079 + ... + 12921681.

It is an arithmetic number, because the mean of its divisors is an integer number (1884270495240).

Almost surely, 2^{21534472107140} is an apocalyptic number.

21534472107140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21534472107140 is an abundant number, since it is smaller than the sum of its proper divisors (23688019778620).

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

21534472107140 is a wasteful number, since it uses less digits than its factorization.

21534472107140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391931 (or 2391929 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 21534472107140 in words is "twenty-one trillion, five hundred thirty-four billion, four hundred seventy-two million, one hundred seven thousand, one hundred forty".