12154050395869 has 16 divisors (see below), whose sum is σ = 12521239608240. Its totient is φ = 11788954444800.

The previous prime is 12154050395843. The next prime is 12154050395887. The reversal of 12154050395869 is 96859305045121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 877852815844 + 11276197580025 = 936938^2 + 3358005^2 .

It is not a de Polignac number, because 12154050395869 - 2³⁷ = 12016611442397 is a prime.

It is a super-2 number, since 2×12154050395869² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12154050395819) 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, 15165519 + ... + 15946819.

It is an arithmetic number, because the mean of its divisors is an integer number (782577475515).

Almost surely, 2^{12154050395869} is an apocalyptic number.

It is an amenable number.

12154050395869 is a deficient number, since it is larger than the sum of its proper divisors (367189212371).

12154050395869 is an equidigital number, since it uses as much as digits as its factorization.

12154050395869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782640.

The product of its (nonzero) digits is 11664000, while the sum is 58.

The spelling of 12154050395869 in words is "twelve trillion, one hundred fifty-four billion, fifty million, three hundred ninety-five thousand, eight hundred sixty-nine".