1392613997440 has 32 divisors (see below), whose sum is σ = 3329217839160. Its totient is φ = 557045598720.

The previous prime is 1392613997377. The next prime is 1392613997447. The reversal of 1392613997440 is 447993162931.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392613997447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1087979046 + ... + 1087980325.

Almost surely, 2^{1392613997440} is an apocalyptic number.

1392613997440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1392613997440 is an abundant number, since it is smaller than the sum of its proper divisors (1936603841720).

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

1392613997440 is an equidigital number, since it uses as much as digits as its factorization.

1392613997440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175959390 (or 2175959378 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 58.

The spelling of 1392613997440 in words is "one trillion, three hundred ninety-two billion, six hundred thirteen million, nine hundred ninety-seven thousand, four hundred forty".