1138404432815 has 32 divisors (see below), whose sum is σ = 1535259833856. Its totient is φ = 804050501760.

The previous prime is 1138404432673. The next prime is 1138404432899. The reversal of 1138404432815 is 5182344048311.

It is a happy number.

It is not a de Polignac number, because 1138404432815 - 2¹⁶ = 1138404367279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24295760 + ... + 24342570.

It is an arithmetic number, because the mean of its divisors is an integer number (47976869808).

Almost surely, 2^{1138404432815} is an apocalyptic number.

1138404432815 is a deficient number, since it is larger than the sum of its proper divisors (396855401041).

1138404432815 is a wasteful number, since it uses less digits than its factorization.

1138404432815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63119.

The product of its (nonzero) digits is 368640, while the sum is 44.

The spelling of 1138404432815 in words is "one trillion, one hundred thirty-eight billion, four hundred four million, four hundred thirty-two thousand, eight hundred fifteen".