1440215214557 has 8 divisors (see below), whose sum is σ = 1670526816576. Its totient is φ = 1216045255392.

The previous prime is 1440215214523. The next prime is 1440215214563. The reversal of 1440215214557 is 7554125120441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1440215214557 - 2¹⁰ = 1440215213533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440215214577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1535410208 + ... + 1535411145.

It is an arithmetic number, because the mean of its divisors is an integer number (208815852072).

Almost surely, 2^{1440215214557} is an apocalyptic number.

It is an amenable number.

1440215214557 is a deficient number, since it is larger than the sum of its proper divisors (230311602019).

1440215214557 is an equidigital number, since it uses as much as digits as its factorization.

1440215214557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3070821427.

The product of its (nonzero) digits is 224000, while the sum is 41.

The spelling of 1440215214557 in words is "one trillion, four hundred forty billion, two hundred fifteen million, two hundred fourteen thousand, five hundred fifty-seven".