13165155450 has 96 divisors (see below), whose sum is σ = 36305265600. Its totient is φ = 3508004160.

The previous prime is 13165155431. The next prime is 13165155457. The reversal of 13165155450 is 5455156131.

13165155450 is a `hidden beast` number, since 1 + 3 + 1 + 6 + 51 + 554 + 50 = 666.

It is not an unprimeable number, because it can be changed into a prime (13165155457) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2250229 + ... + 2256071.

It is an arithmetic number, because the mean of its divisors is an integer number (378179850).

Almost surely, 2^13165155450 is an apocalyptic number.

13165155450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13165155450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18152632800).

13165155450 is an abundant number, since it is smaller than the sum of its proper divisors (23140110150).

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

13165155450 is a wasteful number, since it uses less digits than its factorization.

13165155450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7533 (or 7522 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 13165155450 in words is "thirteen billion, one hundred sixty-five million, one hundred fifty-five thousand, four hundred fifty".