450186378972 has 48 divisors (see below), whose sum is σ = 1147662816384. Its totient is φ = 136213704000.

The previous prime is 450186378911. The next prime is 450186378973. The reversal of 450186378972 is 279873681054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450186378973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2492554 + ... + 2667057.

It is an arithmetic number, because the mean of its divisors is an integer number (23909642008).

It is a 1-persistent number, because it is pandigital, but 2⋅450186378972 = 900372757944 is not.

Almost surely, 2^450186378972 is an apocalyptic number.

It is an amenable number.

450186378972 is an abundant number, since it is smaller than the sum of its proper divisors (697476437412).

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

450186378972 is a wasteful number, since it uses less digits than its factorization.

450186378972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5160290 (or 5160288 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 60.

The spelling of 450186378972 in words is "four hundred fifty billion, one hundred eighty-six million, three hundred seventy-eight thousand, nine hundred seventy-two".