21016254462841 has 32 divisors (see below), whose sum is σ = 24725275660800. Its totient is φ = 17657331108480.

The previous prime is 21016254462821. The next prime is 21016254462923. The reversal of 21016254462841 is 14826445261012.

It is a cyclic number.

It is not a de Polignac number, because 21016254462841 - 2¹³ = 21016254454649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21016254462791 and 21016254462800.

It is not an unprimeable number, because it can be changed into a prime (21016254462821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5825170 + ... + 8715796.

It is an arithmetic number, because the mean of its divisors is an integer number (772664864400).

Almost surely, 2^{21016254462841} is an apocalyptic number.

It is an amenable number.

21016254462841 is a deficient number, since it is larger than the sum of its proper divisors (3709021197959).

21016254462841 is a wasteful number, since it uses less digits than its factorization.

21016254462841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891509.

The product of its (nonzero) digits is 737280, while the sum is 46.

The spelling of 21016254462841 in words is "twenty-one trillion, sixteen billion, two hundred fifty-four million, four hundred sixty-two thousand, eight hundred forty-one".