163965290763720 has 64 divisors (see below), whose sum is σ = 494444555637120. Its totient is φ = 43497527906304.

The previous prime is 163965290763719. The next prime is 163965290763803. The reversal of 163965290763720 is 27367092569361.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3539814724 + ... + 3539861043.

It is an arithmetic number, because the mean of its divisors is an integer number (7725696181830).

Almost surely, 2^{163965290763720} is an apocalyptic number.

163965290763720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163965290763720 is an abundant number, since it is smaller than the sum of its proper divisors (330479264873400).

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

163965290763720 is a wasteful number, since it uses less digits than its factorization.

163965290763720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7079675974 (or 7079675970 counting only the distinct ones).

The product of its (nonzero) digits is 154314720, while the sum is 66.

The spelling of 163965290763720 in words is "one hundred sixty-three trillion, nine hundred sixty-five billion, two hundred ninety million, seven hundred sixty-three thousand, seven hundred twenty".