163540416011421 has 16 divisors (see below), whose sum is σ = 232849535592960. Its totient is φ = 101871671818560.

The previous prime is 163540416011419. The next prime is 163540416011431. The reversal of 163540416011421 is 124110614045361.

It is not a de Polignac number, because 163540416011421 - 2¹ = 163540416011419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163540416011421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163540416011431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30318947250 + ... + 30318952643.

It is an arithmetic number, because the mean of its divisors is an integer number (14553095974560).

Almost surely, 2^{163540416011421} is an apocalyptic number.

It is an amenable number.

163540416011421 is a deficient number, since it is larger than the sum of its proper divisors (69309119581539).

163540416011421 is a wasteful number, since it uses less digits than its factorization.

163540416011421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60637899956.

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 163540416011421 in words is "one hundred sixty-three trillion, five hundred forty billion, four hundred sixteen million, eleven thousand, four hundred twenty-one".