21346451882 has 16 divisors (see below), whose sum is σ = 37774367232. Its totient is φ = 8853366960.

The previous prime is 21346451857. The next prime is 21346451887. The reversal of 21346451882 is 28815464312.

It is not an unprimeable number, because it can be changed into a prime (21346451887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24592253 + ... + 24593120.

It is an arithmetic number, because the mean of its divisors is an integer number (2360897952).

Almost surely, 2^21346451882 is an apocalyptic number.

21346451882 is a deficient number, since it is larger than the sum of its proper divisors (16427915350).

21346451882 is a wasteful number, since it uses less digits than its factorization.

21346451882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49185413.

The product of its digits is 368640, while the sum is 44.

The spelling of 21346451882 in words is "twenty-one billion, three hundred forty-six million, four hundred fifty-one thousand, eight hundred eighty-two".