163740531003 has 32 divisors (see below), whose sum is σ = 266439413760. Its totient is φ = 87425412480.

The previous prime is 163740531001. The next prime is 163740531011. The reversal of 163740531003 is 300135047361.

It is not a de Polignac number, because 163740531003 - 2¹ = 163740531001 is a prime.

It is a super-2 number, since 2×163740531003² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163740531001) 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, 4317700 + ... + 4355457.

It is an arithmetic number, because the mean of its divisors is an integer number (8326231680).

Almost surely, 2^163740531003 is an apocalyptic number.

163740531003 is a deficient number, since it is larger than the sum of its proper divisors (102698882757).

163740531003 is a wasteful number, since it uses less digits than its factorization.

163740531003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8673227.

The product of its (nonzero) digits is 22680, while the sum is 33.

Adding to 163740531003 its reverse (300135047361), we get a palindrome (463875578364).

The spelling of 163740531003 in words is "one hundred sixty-three billion, seven hundred forty million, five hundred thirty-one thousand, three".