163040381655 has 8 divisors (see below), whose sum is σ = 260864610672. Its totient is φ = 86954870208.

The previous prime is 163040381639. The next prime is 163040381789. The reversal of 163040381655 is 556183040361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 163040381655 - 2⁴ = 163040381639 is a prime.

It is a congruent number.

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, 5434679374 + ... + 5434679403.

It is an arithmetic number, because the mean of its divisors is an integer number (32608076334).

Almost surely, 2^163040381655 is an apocalyptic number.

163040381655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

163040381655 is a deficient number, since it is larger than the sum of its proper divisors (97824229017).

163040381655 is a wasteful number, since it uses less digits than its factorization.

163040381655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10869358785.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 163040381655 in words is "one hundred sixty-three billion, forty million, three hundred eighty-one thousand, six hundred fifty-five".