21163511535230 has 16 divisors (see below), whose sum is σ = 40099285014480. Its totient is φ = 8019857002752.

The previous prime is 21163511535151. The next prime is 21163511535251. The reversal of 21163511535230 is 3253511536112.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55693451219 + ... + 55693451598.

It is an arithmetic number, because the mean of its divisors is an integer number (2506205313405).

Almost surely, 2^{21163511535230} is an apocalyptic number.

21163511535230 is a deficient number, since it is larger than the sum of its proper divisors (18935773479250).

21163511535230 is a wasteful number, since it uses less digits than its factorization.

21163511535230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111386902843.

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 21163511535230 in words is "twenty-one trillion, one hundred sixty-three billion, five hundred eleven million, five hundred thirty-five thousand, two hundred thirty".