36261206506421 has 48 divisors (see below), whose sum is σ = 39968378812800. Its totient is φ = 32877815832576.

The previous prime is 36261206506223. The next prime is 36261206506451. The reversal of 36261206506421 is 12460560216263.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-36261206506421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36261206506451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2145244256 + ... + 2145261158.

It is an arithmetic number, because the mean of its divisors is an integer number (832674558600).

Almost surely, 2^{36261206506421} is an apocalyptic number.

It is an amenable number.

36261206506421 is a deficient number, since it is larger than the sum of its proper divisors (3707172306379).

36261206506421 is a wasteful number, since it uses less digits than its factorization.

36261206506421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17950 (or 17937 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 36261206506421 in words is "thirty-six trillion, two hundred sixty-one billion, two hundred six million, five hundred six thousand, four hundred twenty-one".