21676335142 has 32 divisors (see below), whose sum is σ = 42300071424. Its totient is φ = 8078136000.

The previous prime is 21676335137. The next prime is 21676335169. The reversal of 21676335142 is 24153367612.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21676335095 and 21676335104.

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, 3056359 + ... + 3063442.

It is an arithmetic number, because the mean of its divisors is an integer number (1321877232).

Almost surely, 2^21676335142 is an apocalyptic number.

21676335142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21676335142 is a deficient number, since it is larger than the sum of its proper divisors (20623736282).

21676335142 is a wasteful number, since it uses less digits than its factorization.

21676335142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6119844.

The product of its digits is 181440, while the sum is 40.

The spelling of 21676335142 in words is "twenty-one billion, six hundred seventy-six million, three hundred thirty-five thousand, one hundred forty-two".