15381765269065 has 8 divisors (see below), whose sum is σ = 19877973578568. Its totient is φ = 11358842044800.

The previous prime is 15381765269063. The next prime is 15381765269107. The reversal of 15381765269065 is 56096256718351.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 230138953984 + 15151626315081 = 479728^2 + 3892509^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15381765269065 - 2¹ = 15381765269063 is a prime.

It is a super-2 number, since 2×15381765269065² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15381765268988 and 15381765269006.

It is not an unprimeable number, because it can be changed into a prime (15381765269063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118321271236 + ... + 118321271365.

It is an arithmetic number, because the mean of its divisors is an integer number (2484746697321).

Almost surely, 2^{15381765269065} is an apocalyptic number.

It is an amenable number.

15381765269065 is a deficient number, since it is larger than the sum of its proper divisors (4496208309503).

15381765269065 is a wasteful number, since it uses less digits than its factorization.

15381765269065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236642542619.

The product of its (nonzero) digits is 81648000, while the sum is 64.

The spelling of 15381765269065 in words is "fifteen trillion, three hundred eighty-one billion, seven hundred sixty-five million, two hundred sixty-nine thousand, sixty-five".