1390376021759 has 16 divisors (see below), whose sum is σ = 1396973692800. Its totient is φ = 1383798450144.

The previous prime is 1390376021747. The next prime is 1390376021777. The reversal of 1390376021759 is 9571206730931.

It is a cyclic number.

It is not a de Polignac number, because 1390376021759 - 2¹⁶ = 1390375956223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1390376021759.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390376021459) 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, 420432584 + ... + 420435890.

It is an arithmetic number, because the mean of its divisors is an integer number (87310855800).

Almost surely, 2^{1390376021759} is an apocalyptic number.

1390376021759 is a deficient number, since it is larger than the sum of its proper divisors (6597671041).

1390376021759 is a wasteful number, since it uses less digits than its factorization.

1390376021759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5782.

The product of its (nonzero) digits is 2143260, while the sum is 53.

The spelling of 1390376021759 in words is "one trillion, three hundred ninety billion, three hundred seventy-six million, twenty-one thousand, seven hundred fifty-nine".