139154275369 has 4 divisors (see below), whose sum is σ = 141435493060. Its totient is φ = 136873057680.

The previous prime is 139154275367. The next prime is 139154275399. The reversal of 139154275369 is 963572451931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7611690025 + 131542585344 = 87245^2 + 362688^2 .

It is a cyclic number.

It is not a de Polignac number, because 139154275369 - 2¹ = 139154275367 is a prime.

It is a super-2 number, since 2×139154275369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139154275367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1140608754 + ... + 1140608875.

It is an arithmetic number, because the mean of its divisors is an integer number (35358873265).

Almost surely, 2^139154275369 is an apocalyptic number.

It is an amenable number.

139154275369 is a deficient number, since it is larger than the sum of its proper divisors (2281217691).

139154275369 is an equidigital number, since it uses as much as digits as its factorization.

139154275369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281217690.

The product of its digits is 6123600, while the sum is 55.

The spelling of 139154275369 in words is "one hundred thirty-nine billion, one hundred fifty-four million, two hundred seventy-five thousand, three hundred sixty-nine".