136166522261 has 8 divisors (see below), whose sum is σ = 169766053824. Its totient is φ = 106103783520.

The previous prime is 136166522243. The next prime is 136166522383. The reversal of 136166522261 is 162225661631.

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 136166522261 - 2¹⁴ = 136166505877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136166522861) 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, 884198120 + ... + 884198273.

It is an arithmetic number, because the mean of its divisors is an integer number (21220756728).

Almost surely, 2^136166522261 is an apocalyptic number.

136166522261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

136166522261 is a deficient number, since it is larger than the sum of its proper divisors (33599531563).

136166522261 is a wasteful number, since it uses less digits than its factorization.

136166522261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768396411.

The product of its digits is 155520, while the sum is 41.

The spelling of 136166522261 in words is "one hundred thirty-six billion, one hundred sixty-six million, five hundred twenty-two thousand, two hundred sixty-one".