21334550502 has 32 divisors (see below), whose sum is σ = 43009155072. Its totient is φ = 7054910784.

The previous prime is 21334550477. The next prime is 21334550513. The reversal of 21334550502 is 20505543312.

It is a self number, because there is not a number n which added to its sum of digits gives 21334550502.

It is a congruent number.

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, 1359183 + ... + 1374789.

It is an arithmetic number, because the mean of its divisors is an integer number (1344036096).

Almost surely, 2^21334550502 is an apocalyptic number.

21334550502 is an abundant number, since it is smaller than the sum of its proper divisors (21674604570).

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

21334550502 is a wasteful number, since it uses less digits than its factorization.

21334550502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17412.

The product of its (nonzero) digits is 18000, while the sum is 30.

The spelling of 21334550502 in words is "twenty-one billion, three hundred thirty-four million, five hundred fifty thousand, five hundred two".