163040166041421 has 4 divisors (see below), whose sum is σ = 217386888055232. Its totient is φ = 108693444027612.

The previous prime is 163040166041411. The next prime is 163040166041471. The reversal of 163040166041421 is 124140661040361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 163040166041421 - 2³⁴ = 163022986172237 is a prime.

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 163040166041421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163040166041411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27173361006901 + ... + 27173361006906.

It is an arithmetic number, because the mean of its divisors is an integer number (54346722013808).

Almost surely, 2^{163040166041421} is an apocalyptic number.

It is an amenable number.

163040166041421 is a deficient number, since it is larger than the sum of its proper divisors (54346722013811).

163040166041421 is an equidigital number, since it uses as much as digits as its factorization.

163040166041421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54346722013810.

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

The spelling of 163040166041421 in words is "one hundred sixty-three trillion, forty billion, one hundred sixty-six million, forty-one thousand, four hundred twenty-one".