136721223542 has 8 divisors (see below), whose sum is σ = 205617298176. Its totient is φ = 68182124152.

The previous prime is 136721223533. The next prime is 136721223563. The reversal of 136721223542 is 245322127631.

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

It is a junction number, because it is equal to n+sod(n) for n = 136721223496 and 136721223505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89242853 + ... + 89244384.

It is an arithmetic number, because the mean of its divisors is an integer number (25702162272).

Almost surely, 2^136721223542 is an apocalyptic number.

136721223542 is a deficient number, since it is larger than the sum of its proper divisors (68896074634).

136721223542 is a wasteful number, since it uses less digits than its factorization.

136721223542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178487622.

The product of its digits is 120960, while the sum is 38.

The spelling of 136721223542 in words is "one hundred thirty-six billion, seven hundred twenty-one million, two hundred twenty-three thousand, five hundred forty-two".