1390140251515 has 16 divisors (see below), whose sum is σ = 1671992118720. Its totient is φ = 1109563585920.

The previous prime is 1390140251483. The next prime is 1390140251593. The reversal of 1390140251515 is 5151520410931.

It is not a de Polignac number, because 1390140251515 - 2⁵ = 1390140251483 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21447937 + ... + 21512653.

It is an arithmetic number, because the mean of its divisors is an integer number (104499507420).

Almost surely, 2^{1390140251515} is an apocalyptic number.

1390140251515 is a deficient number, since it is larger than the sum of its proper divisors (281851867205).

1390140251515 is an equidigital number, since it uses as much as digits as its factorization.

1390140251515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74502.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 1390140251515 in words is "one trillion, three hundred ninety billion, one hundred forty million, two hundred fifty-one thousand, five hundred fifteen".