1390787523840 has 576 divisors, whose sum is σ = 5493063260160. Its totient is φ = 294842695680.

The previous prime is 1390787523799. The next prime is 1390787523857. The reversal of 1390787523840 is 483257870931.

It is a super-3 number, since 3×1390787523840³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 10366629 + ... + 10499931.

It is an arithmetic number, because the mean of its divisors is an integer number (9536568160).

Almost surely, 2^{1390787523840} is an apocalyptic number.

1390787523840 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 1390787523840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2746531630080).

1390787523840 is an abundant number, since it is smaller than the sum of its proper divisors (4102275736320).

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

1390787523840 is a wasteful number, since it uses less digits than its factorization.

1390787523840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133370 (or 133356 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 1390787523840 in words is "one trillion, three hundred ninety billion, seven hundred eighty-seven million, five hundred twenty-three thousand, eight hundred forty".