36135665721015 has 32 divisors (see below), whose sum is σ = 67425148876800. Its totient is φ = 16519161470112.

The previous prime is 36135665721011. The next prime is 36135665721037. The reversal of 36135665721015 is 51012756653163.

It is not a de Polignac number, because 36135665721015 - 2² = 36135665721011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36135665721011) 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, 3511721359 + ... + 3511731648.

It is an arithmetic number, because the mean of its divisors is an integer number (2107035902400).

Almost surely, 2^{36135665721015} is an apocalyptic number.

36135665721015 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

36135665721015 is a deficient number, since it is larger than the sum of its proper divisors (31289483155785).

36135665721015 is an equidigital number, since it uses as much as digits as its factorization.

36135665721015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7023453036 (or 7023453022 counting only the distinct ones).

The product of its (nonzero) digits is 3402000, while the sum is 51.

The spelling of 36135665721015 in words is "thirty-six trillion, one hundred thirty-five billion, six hundred sixty-five million, seven hundred twenty-one thousand, fifteen".