21355525162 has 8 divisors (see below), whose sum is σ = 33426039456. Its totient is φ = 10213512012.

The previous prime is 21355525111. The next prime is 21355525181. The reversal of 21355525162 is 26152555312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232125228 + ... + 232125319.

It is an arithmetic number, because the mean of its divisors is an integer number (4178254932).

Almost surely, 2^21355525162 is an apocalyptic number.

21355525162 is a deficient number, since it is larger than the sum of its proper divisors (12070514294).

21355525162 is a wasteful number, since it uses less digits than its factorization.

21355525162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464250572.

The product of its digits is 90000, while the sum is 37.

The spelling of 21355525162 in words is "twenty-one billion, three hundred fifty-five million, five hundred twenty-five thousand, one hundred sixty-two".