163621430234233 has 32 divisors (see below), whose sum is σ = 169521022509696. Its totient is φ = 157830304923648.

The previous prime is 163621430234221. The next prime is 163621430234261. The reversal of 163621430234233 is 332432034126361.

It is a cyclic number.

It is not a de Polignac number, because 163621430234233 - 2¹³ = 163621430226041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163621430234233.

It is not an unprimeable number, because it can be changed into a prime (163621430234203) 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, 1582559566 + ... + 1582662952.

It is an arithmetic number, because the mean of its divisors is an integer number (5297531953428).

Almost surely, 2^{163621430234233} is an apocalyptic number.

It is an amenable number.

163621430234233 is a deficient number, since it is larger than the sum of its proper divisors (5899592275463).

163621430234233 is a wasteful number, since it uses less digits than its factorization.

163621430234233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104953.

The product of its (nonzero) digits is 1119744, while the sum is 43.

The spelling of 163621430234233 in words is "one hundred sixty-three trillion, six hundred twenty-one billion, four hundred thirty million, two hundred thirty-four thousand, two hundred thirty-three".