163538257746 has 16 divisors (see below), whose sum is σ = 330751533600. Its totient is φ = 53900249568.

The previous prime is 163538257709. The next prime is 163538257777. The reversal of 163538257746 is 647752835361.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153125176 + ... + 153126243.

It is an arithmetic number, because the mean of its divisors is an integer number (20671970850).

Almost surely, 2^163538257746 is an apocalyptic number.

163538257746 is an abundant number, since it is smaller than the sum of its proper divisors (167213275854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163538257746 is a wasteful number, since it uses less digits than its factorization.

163538257746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306251513.

The product of its digits is 25401600, while the sum is 57.

The spelling of 163538257746 in words is "one hundred sixty-three billion, five hundred thirty-eight million, two hundred fifty-seven thousand, seven hundred forty-six".