21054082995768 has 16 divisors (see below), whose sum is σ = 52635207489480. Its totient is φ = 7018027665248.

The previous prime is 21054082995719. The next prime is 21054082995839. The reversal of 21054082995768 is 86759928045012.

It is a junction number, because it is equal to n+sod(n) for n = 21054082995699 and 21054082995708.

It is a congruent number.

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, 438626729055 + ... + 438626729102.

Almost surely, 2^{21054082995768} is an apocalyptic number.

It is an amenable number.

21054082995768 is an abundant number, since it is smaller than the sum of its proper divisors (31581124493712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21054082995768 is a wasteful number, since it uses less digits than its factorization.

21054082995768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877253458166 (or 877253458162 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 66.

The spelling of 21054082995768 in words is "twenty-one trillion, fifty-four billion, eighty-two million, nine hundred ninety-five thousand, seven hundred sixty-eight".