1390206508688 has 80 divisors (see below), whose sum is σ = 2880754191360. Its totient is φ = 648476505600.

The previous prime is 1390206508687. The next prime is 1390206508699. The reversal of 1390206508688 is 8868056020931.

It is not an unprimeable number, because it can be changed into a prime (1390206508687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9231758 + ... + 9381138.

It is an arithmetic number, because the mean of its divisors is an integer number (36009427392).

Almost surely, 2^{1390206508688} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1390206508688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1440377095680).

1390206508688 is an abundant number, since it is smaller than the sum of its proper divisors (1490547682672).

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

1390206508688 is a wasteful number, since it uses less digits than its factorization.

1390206508688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150096 (or 150090 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 1390206508688 in words is "one trillion, three hundred ninety billion, two hundred six million, five hundred eight thousand, six hundred eighty-eight".