139784126365 has 8 divisors (see below), whose sum is σ = 180644101848. Its totient is φ = 103225200960.

The previous prime is 139784126327. The next prime is 139784126479. The reversal of 139784126365 is 563621487931.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11638741689 + 128145384676 = 107883^2 + 357974^2 .

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

It is not a de Polignac number, because 139784126365 - 2¹¹ = 139784124317 is a prime.

It is a super-2 number, since 2×139784126365² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1075262446 + ... + 1075262575.

It is an arithmetic number, because the mean of its divisors is an integer number (22580512731).

Almost surely, 2^139784126365 is an apocalyptic number.

It is an amenable number.

139784126365 is a deficient number, since it is larger than the sum of its proper divisors (40859975483).

139784126365 is a wasteful number, since it uses less digits than its factorization.

139784126365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150525039.

The product of its digits is 6531840, while the sum is 55.

The spelling of 139784126365 in words is "one hundred thirty-nine billion, seven hundred eighty-four million, one hundred twenty-six thousand, three hundred sixty-five".