440121002165490 has 64 divisors (see below), whose sum is σ = 1066168358407296. Its totient is φ = 116268062733312.

The previous prime is 440121002165479. The next prime is 440121002165491. The reversal of 440121002165490 is 94561200121044.

It is not an unprimeable number, because it can be changed into a prime (440121002165491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 851974314 + ... + 852490746.

It is an arithmetic number, because the mean of its divisors is an integer number (16658880600114).

Almost surely, 2^{440121002165490} is an apocalyptic number.

440121002165490 is an abundant number, since it is smaller than the sum of its proper divisors (626047356241806).

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

440121002165490 is a wasteful number, since it uses less digits than its factorization.

440121002165490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782043.

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 440121002165490 in words is "four hundred forty trillion, one hundred twenty-one billion, two million, one hundred sixty-five thousand, four hundred ninety".