1390656833280 has 1080 divisors, whose sum is σ = 5890937148096. Its totient is φ = 311159439360.

The previous prime is 1390656833243. The next prime is 1390656833281. The reversal of 1390656833280 is 823386560931.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (1080).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390656833281) 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 119 ways as a sum of consecutive naturals, for example, 163084377 + ... + 163092903.

Almost surely, 2^{1390656833280} is an apocalyptic number.

1390656833280 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 1390656833280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2945468574048).

1390656833280 is an abundant number, since it is smaller than the sum of its proper divisors (4500280314816).

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

1390656833280 is a wasteful number, since it uses less digits than its factorization.

1390656833280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8595 (or 8561 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 1390656833280 in words is "one trillion, three hundred ninety billion, six hundred fifty-six million, eight hundred thirty-three thousand, two hundred eighty".