136212721736610 has 64 divisors (see below), whose sum is σ = 346804941429504. Its totient is φ = 34121104742400.

The previous prime is 136212721736599. The next prime is 136212721736617. The reversal of 136212721736610 is 16637127212631.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 136212721736610.

It is not an unprimeable number, because it can be changed into a prime (136212721736617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256052686 + ... + 256584105.

It is an arithmetic number, because the mean of its divisors is an integer number (5418827209836).

Almost surely, 2^{136212721736610} is an apocalyptic number.

136212721736610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136212721736610 is an abundant number, since it is smaller than the sum of its proper divisors (210592219692894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136212721736610 is a wasteful number, since it uses less digits than its factorization.

136212721736610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512637339.

The product of its (nonzero) digits is 762048, while the sum is 48.

The spelling of 136212721736610 in words is "one hundred thirty-six trillion, two hundred twelve billion, seven hundred twenty-one million, seven hundred thirty-six thousand, six hundred ten".