1392054128640 has 1040 divisors, whose sum is σ = 5736201596928. Its totient is φ = 316339126272.

The previous prime is 1392054128639. The next prime is 1392054128669. The reversal of 1392054128640 is 468214502931.

1392054128640 is a `hidden beast` number, since 1 + 3 + 9 + 20 + 541 + 2 + 86 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3634605889 + ... + 3634606271.

Almost surely, 2^{1392054128640} is an apocalyptic number.

1392054128640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1392054128640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2868100798464).

1392054128640 is an abundant number, since it is smaller than the sum of its proper divisors (4344147468288).

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

1392054128640 is an equidigital number, since it uses as much as digits as its factorization.

1392054128640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 713 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 1392054128640 in words is "one trillion, three hundred ninety-two billion, fifty-four million, one hundred twenty-eight thousand, six hundred forty".