137921096405 has 4 divisors (see below), whose sum is σ = 165505315692. Its totient is φ = 110336877120.

The previous prime is 137921096399. The next prime is 137921096459. The reversal of 137921096405 is 504690129731.

137921096405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504690129731 = 1451 ⋅347822281.

It can be written as a sum of positive squares in 2 ways, for example, as 101367097924 + 36553998481 = 318382^2 + 191191^2 .

It is a de Polignac number, because none of the positive numbers 2^k-137921096405 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137921096405.

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 3 ways as a sum of consecutive naturals, for example, 13792109636 + ... + 13792109645.

It is an arithmetic number, because the mean of its divisors is an integer number (41376328923).

Almost surely, 2^137921096405 is an apocalyptic number.

It is an amenable number.

137921096405 is a deficient number, since it is larger than the sum of its proper divisors (27584219287).

137921096405 is an equidigital number, since it uses as much as digits as its factorization.

137921096405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27584219286.

The product of its (nonzero) digits is 408240, while the sum is 47.

The spelling of 137921096405 in words is "one hundred thirty-seven billion, nine hundred twenty-one million, ninety-six thousand, four hundred five".