21502532003532 has 48 divisors (see below), whose sum is σ = 50192279165952. Its totient is φ = 7164696240000.

The previous prime is 21502532003507. The next prime is 21502532003549. The reversal of 21502532003532 is 23530023520512.

It is a junction number, because it is equal to n+sod(n) for n = 21502532003493 and 21502532003502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 441044157 + ... + 441092907.

It is an arithmetic number, because the mean of its divisors is an integer number (1045672482624).

Almost surely, 2^{21502532003532} is an apocalyptic number.

It is an amenable number.

21502532003532 is an abundant number, since it is smaller than the sum of its proper divisors (28689747162420).

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

21502532003532 is a wasteful number, since it uses less digits than its factorization.

21502532003532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62438 (or 62436 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 33.

The spelling of 21502532003532 in words is "twenty-one trillion, five hundred two billion, five hundred thirty-two million, three thousand, five hundred thirty-two".