21435472502 has 16 divisors (see below), whose sum is σ = 32279976960. Its totient is φ = 10675528488.

The previous prime is 21435472493. The next prime is 21435472517. The reversal of 21435472502 is 20527453412.

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, 950999 + ... + 973277.

It is an arithmetic number, because the mean of its divisors is an integer number (2017498560).

Almost surely, 2^21435472502 is an apocalyptic number.

21435472502 is a deficient number, since it is larger than the sum of its proper divisors (10844504458).

21435472502 is a wasteful number, since it uses less digits than its factorization.

21435472502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24155.

The product of its (nonzero) digits is 67200, while the sum is 35.

The spelling of 21435472502 in words is "twenty-one billion, four hundred thirty-five million, four hundred seventy-two thousand, five hundred two".