36738640781 has 8 divisors (see below), whose sum is σ = 37098709344. Its totient is φ = 36378882000.

The previous prime is 36738640747. The next prime is 36738640801. The reversal of 36738640781 is 18704683763.

36738640781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36738640781 - 2¹⁸ = 36738378637 is a prime.

It is a super-2 number, since 2×36738640781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36738640481) 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, 164591 + ... + 317123.

It is an arithmetic number, because the mean of its divisors is an integer number (4637338668).

Almost surely, 2^36738640781 is an apocalyptic number.

It is an amenable number.

36738640781 is a deficient number, since it is larger than the sum of its proper divisors (360068563).

36738640781 is a wasteful number, since it uses less digits than its factorization.

36738640781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154891.

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 36738640781 in words is "thirty-six billion, seven hundred thirty-eight million, six hundred forty thousand, seven hundred eighty-one".