163036021420821 has 8 divisors (see below), whose sum is σ = 217517140390464. Its totient is φ = 108622791699200.

The previous prime is 163036021420807. The next prime is 163036021420823. The reversal of 163036021420821 is 128024120630361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163036021420821 - 2¹⁹ = 163036020896533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163036021420821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163036021420823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16972306401 + ... + 16972316006.

It is an arithmetic number, because the mean of its divisors is an integer number (27189642548808).

Almost surely, 2^{163036021420821} is an apocalyptic number.

It is an amenable number.

163036021420821 is a deficient number, since it is larger than the sum of its proper divisors (54481118969643).

163036021420821 is a wasteful number, since it uses less digits than its factorization.

163036021420821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33944624011.

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 163036021420821 in words is "one hundred sixty-three trillion, thirty-six billion, twenty-one million, four hundred twenty thousand, eight hundred twenty-one".