21054010374645 has 48 divisors (see below), whose sum is σ = 34026072495552. Its totient is φ = 11116706215680.

The previous prime is 21054010374613. The next prime is 21054010374701. The reversal of 21054010374645 is 54647301045012.

It is not a de Polignac number, because 21054010374645 - 2⁵ = 21054010374613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21054010374597 and 21054010374606.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 645594390 + ... + 645627000.

It is an arithmetic number, because the mean of its divisors is an integer number (708876510324).

Almost surely, 2^{21054010374645} is an apocalyptic number.

It is an amenable number.

21054010374645 is a deficient number, since it is larger than the sum of its proper divisors (12972062120907).

21054010374645 is a wasteful number, since it uses less digits than its factorization.

21054010374645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36882 (or 36779 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 21054010374645 in words is "twenty-one trillion, fifty-four billion, ten million, three hundred seventy-four thousand, six hundred forty-five".