449267199978 has 32 divisors (see below), whose sum is σ = 910479548160. Its totient is φ = 147767256000.

The previous prime is 449267199869. The next prime is 449267200021. The reversal of 449267199978 is 879991762944.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460228 + ... + 1053728.

It is an arithmetic number, because the mean of its divisors is an integer number (28452485880).

Almost surely, 2^449267199978 is an apocalyptic number.

449267199978 is an abundant number, since it is smaller than the sum of its proper divisors (461212348182).

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

449267199978 is a wasteful number, since it uses less digits than its factorization.

449267199978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595182.

The product of its digits is 493807104, while the sum is 75.

The spelling of 449267199978 in words is "four hundred forty-nine billion, two hundred sixty-seven million, one hundred ninety-nine thousand, nine hundred seventy-eight".