163455131315646 has 96 divisors (see below), whose sum is σ = 360925950528000. Its totient is φ = 53453033123904.

The previous prime is 163455131315573. The next prime is 163455131315657. The reversal of 163455131315646 is 646513131554361.

163455131315646 is a `hidden beast` number, since 1 + 6 + 3 + 4 + 5 + 513 + 1 + 31 + 56 + 46 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 163455131315592 and 163455131315601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1430509665 + ... + 1430623923.

It is an arithmetic number, because the mean of its divisors is an integer number (3759645318000).

Almost surely, 2^{163455131315646} is an apocalyptic number.

163455131315646 is an abundant number, since it is smaller than the sum of its proper divisors (197470819212354).

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

163455131315646 is a wasteful number, since it uses less digits than its factorization.

163455131315646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121558 (or 121555 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 54.

The spelling of 163455131315646 in words is "one hundred sixty-three trillion, four hundred fifty-five billion, one hundred thirty-one million, three hundred fifteen thousand, six hundred forty-six".