21503065440102 has 16 divisors (see below), whose sum is σ = 43133745515952. Its totient is φ = 7146419374080.

The previous prime is 21503065440047. The next prime is 21503065440119. The reversal of 21503065440102 is 20104456030512.

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, 5317274299 + ... + 5317278342.

It is an arithmetic number, because the mean of its divisors is an integer number (2695859094747).

Almost surely, 2^{21503065440102} is an apocalyptic number.

21503065440102 is an abundant number, since it is smaller than the sum of its proper divisors (21630680075850).

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

21503065440102 is a wasteful number, since it uses less digits than its factorization.

21503065440102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10634552983.

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 21503065440102 in words is "twenty-one trillion, five hundred three billion, sixty-five million, four hundred forty thousand, one hundred two".