163444346556465 has 96 divisors (see below), whose sum is σ = 297824524268544. Its totient is φ = 76400033448960.

The previous prime is 163444346556437. The next prime is 163444346556473. The reversal of 163444346556465 is 564655643444361.

It is not a de Polignac number, because 163444346556465 - 2¹² = 163444346552369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163444346556396 and 163444346556405.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15456142 + ... + 23786151.

It is an arithmetic number, because the mean of its divisors is an integer number (3102338794464).

Almost surely, 2^{163444346556465} is an apocalyptic number.

163444346556465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163444346556465 is a deficient number, since it is larger than the sum of its proper divisors (134380177712079).

163444346556465 is a wasteful number, since it uses less digits than its factorization.

163444346556465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39242411 (or 39242398 counting only the distinct ones).

The product of its digits is 1492992000, while the sum is 66.

The spelling of 163444346556465 in words is "one hundred sixty-three trillion, four hundred forty-four billion, three hundred forty-six million, five hundred fifty-six thousand, four hundred sixty-five".