136378501165 has 4 divisors (see below), whose sum is σ = 163654201404. Its totient is φ = 109102800928.

The previous prime is 136378501111. The next prime is 136378501199. The reversal of 136378501165 is 561105873631.

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 58186123524 + 78192377641 = 241218^2 + 279629^2 .

It is a cyclic number.

It is not a de Polignac number, because 136378501165 - 2¹⁹ = 136377976877 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 13637850112 + ... + 13637850121.

It is an arithmetic number, because the mean of its divisors is an integer number (40913550351).

Almost surely, 2^136378501165 is an apocalyptic number.

It is an amenable number.

136378501165 is a deficient number, since it is larger than the sum of its proper divisors (27275700239).

136378501165 is an equidigital number, since it uses as much as digits as its factorization.

136378501165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27275700238.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 136378501165 in words is "one hundred thirty-six billion, three hundred seventy-eight million, five hundred one thousand, one hundred sixty-five".