1392399636480 has 144 divisors (see below), whose sum is σ = 4825807262640. Its totient is φ = 371306545152.

The previous prime is 1392399636457. The next prime is 1392399636493. The reversal of 1392399636480 is 846369932931.

1392399636480 is a `hidden beast` number, since 1 + 3 + 9 + 2 + 3 + 99 + 63 + 6 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×1392399636480² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7462092 + ... + 7646411.

It is an arithmetic number, because the mean of its divisors is an integer number (33512550435).

Almost surely, 2^{1392399636480} is an apocalyptic number.

1392399636480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1392399636480 is an abundant number, since it is smaller than the sum of its proper divisors (3433407626160).

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

1392399636480 is a wasteful number, since it uses less digits than its factorization.

1392399636480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15108536 (or 15108513 counting only the distinct ones).

The product of its (nonzero) digits is 45349632, while the sum is 63.

The spelling of 1392399636480 in words is "one trillion, three hundred ninety-two billion, three hundred ninety-nine million, six hundred thirty-six thousand, four hundred eighty".