21194599162 has 32 divisors (see below), whose sum is σ = 35095063104. Its totient is φ = 9519648000.

The previous prime is 21194599133. The next prime is 21194599183. The reversal of 21194599162 is 26199549112.

It is a happy number.

It is a super-2 number, since 2×21194599162² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 932728 + ... + 955180.

It is an arithmetic number, because the mean of its divisors is an integer number (1096720722).

Almost surely, 2^21194599162 is an apocalyptic number.

21194599162 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21194599162 is a deficient number, since it is larger than the sum of its proper divisors (13900463942).

21194599162 is a wasteful number, since it uses less digits than its factorization.

21194599162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22974.

The product of its digits is 349920, while the sum is 49.

The spelling of 21194599162 in words is "twenty-one billion, one hundred ninety-four million, five hundred ninety-nine thousand, one hundred sixty-two".