21170079146 has 8 divisors (see below), whose sum is σ = 32493609984. Its totient is φ = 10338875820.

The previous prime is 21170079121. The next prime is 21170079157. The reversal of 21170079146 is 64197007112.

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

It is a super-3 number, since 3×21170079146³ (a number of 32 digits) contains 333 as substring.

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, 123081770 + ... + 123081941.

It is an arithmetic number, because the mean of its divisors is an integer number (4061701248).

Almost surely, 2^21170079146 is an apocalyptic number.

21170079146 is a deficient number, since it is larger than the sum of its proper divisors (11323530838).

21170079146 is a wasteful number, since it uses less digits than its factorization.

21170079146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246163756.

The product of its (nonzero) digits is 21168, while the sum is 38.

The spelling of 21170079146 in words is "twenty-one billion, one hundred seventy million, seventy-nine thousand, one hundred forty-six".