163651610525055 has 16 divisors (see below), whose sum is σ = 263904329416704. Its totient is φ = 86593608087840.

The previous prime is 163651610524999. The next prime is 163651610525063. The reversal of 163651610525055 is 550525016156361.

It is not a de Polignac number, because 163651610525055 - 2⁸ = 163651610524799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163651610524989 and 163651610525007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42953176711 + ... + 42953180520.

It is an arithmetic number, because the mean of its divisors is an integer number (16494020588544).

Almost surely, 2^{163651610525055} is an apocalyptic number.

163651610525055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

163651610525055 is a deficient number, since it is larger than the sum of its proper divisors (100252718891649).

163651610525055 is a wasteful number, since it uses less digits than its factorization.

163651610525055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85906357366.

The product of its (nonzero) digits is 4050000, while the sum is 51.

The spelling of 163651610525055 in words is "one hundred sixty-three trillion, six hundred fifty-one billion, six hundred ten million, five hundred twenty-five thousand, fifty-five".