163236320542 has 4 divisors (see below), whose sum is σ = 244854480816. Its totient is φ = 81618160270.

The previous prime is 163236320509. The next prime is 163236320557. The reversal of 163236320542 is 245023632361.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40809080134 + ... + 40809080137.

It is an arithmetic number, because the mean of its divisors is an integer number (61213620204).

Almost surely, 2^163236320542 is an apocalyptic number.

163236320542 is a deficient number, since it is larger than the sum of its proper divisors (81618160274).

163236320542 is an equidigital number, since it uses as much as digits as its factorization.

163236320542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81618160273.

The product of its (nonzero) digits is 155520, while the sum is 37.

The spelling of 163236320542 in words is "one hundred sixty-three billion, two hundred thirty-six million, three hundred twenty thousand, five hundred forty-two".