1442663401520 has 40 divisors (see below), whose sum is σ = 3659118993360. Its totient is φ = 524604872960.

The previous prime is 1442663401519. The next prime is 1442663401523. The reversal of 1442663401520 is 251043662441.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1442663401523) 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, 819694235 + ... + 819695994.

It is an arithmetic number, because the mean of its divisors is an integer number (91477974834).

Almost surely, 2^{1442663401520} is an apocalyptic number.

1442663401520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442663401520 is an abundant number, since it is smaller than the sum of its proper divisors (2216455591840).

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

1442663401520 is a wasteful number, since it uses less digits than its factorization.

1442663401520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639390253 (or 1639390247 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 1442663401520 in words is "one trillion, four hundred forty-two billion, six hundred sixty-three million, four hundred one thousand, five hundred twenty".