165215001450 has 48 divisors (see below), whose sum is σ = 412343028000. Its totient is φ = 43776707520.

The previous prime is 165215001443. The next prime is 165215001451. The reversal of 165215001450 is 54100512561.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (165215001451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3484200 + ... + 3531299.

It is an arithmetic number, because the mean of its divisors is an integer number (8590479750).

Almost surely, 2^165215001450 is an apocalyptic number.

165215001450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165215001450 is an abundant number, since it is smaller than the sum of its proper divisors (247128026550).

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

165215001450 is a wasteful number, since it uses less digits than its factorization.

165215001450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7015671 (or 7015666 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 165215001450 in words is "one hundred sixty-five billion, two hundred fifteen million, one thousand, four hundred fifty".