136261078779 has 8 divisors (see below), whose sum is σ = 207635929600. Its totient is φ = 77863473576.

The previous prime is 136261078763. The next prime is 136261078841. The reversal of 136261078779 is 977870162631.

It is a happy number.

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

It is not a de Polignac number, because 136261078779 - 2⁴ = 136261078763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136261028779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3244311379 + ... + 3244311420.

It is an arithmetic number, because the mean of its divisors is an integer number (25954491200).

Almost surely, 2^136261078779 is an apocalyptic number.

136261078779 is a deficient number, since it is larger than the sum of its proper divisors (71374850821).

136261078779 is an equidigital number, since it uses as much as digits as its factorization.

136261078779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6488622809.

The product of its (nonzero) digits is 5334336, while the sum is 57.

The spelling of 136261078779 in words is "one hundred thirty-six billion, two hundred sixty-one million, seventy-eight thousand, seven hundred seventy-nine".