163400481645 has 32 divisors (see below), whose sum is σ = 263315368704. Its totient is φ = 86522688000.

The previous prime is 163400481623. The next prime is 163400481683. The reversal of 163400481645 is 546184004361.

It is not a de Polignac number, because 163400481645 - 2¹¹ = 163400479597 is a prime.

It is a super-3 number, since 3×163400481645³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163400481597 and 163400481606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4359585 + ... + 4396905.

It is an arithmetic number, because the mean of its divisors is an integer number (8228605272).

Almost surely, 2^163400481645 is an apocalyptic number.

163400481645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163400481645 is a deficient number, since it is larger than the sum of its proper divisors (99914887059).

163400481645 is a wasteful number, since it uses less digits than its factorization.

163400481645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39413.

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 163400481645 in words is "one hundred sixty-three billion, four hundred million, four hundred eighty-one thousand, six hundred forty-five".