163345527440 has 40 divisors (see below), whose sum is σ = 382550481720. Its totient is φ = 64861285376.

The previous prime is 163345527439. The next prime is 163345527451. The reversal of 163345527440 is 44725543361.

It can be written as a sum of positive squares in 4 ways, for example, as 19686334864 + 143659192576 = 140308^2 + 379024^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×163345527440² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163345527391 and 163345527400.

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, 7440935 + ... + 7462854.

It is an arithmetic number, because the mean of its divisors is an integer number (9563762043).

Almost surely, 2^163345527440 is an apocalyptic number.

163345527440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163345527440 is an abundant number, since it is smaller than the sum of its proper divisors (219204954280).

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

163345527440 is a wasteful number, since it uses less digits than its factorization.

163345527440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14903939 (or 14903933 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 44.

The spelling of 163345527440 in words is "one hundred sixty-three billion, three hundred forty-five million, five hundred twenty-seven thousand, four hundred forty".