36007149781 has 4 divisors (see below), whose sum is σ = 36007531564. Its totient is φ = 36006768000.

The previous prime is 36007149779. The next prime is 36007149803. The reversal of 36007149781 is 18794170063.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 24544235556 + 11462914225 = 156666^2 + 107065^2 .

It is a 4-Lehmer number, since φ(36007149781) divides (36007149781-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 36007149781 - 2¹ = 36007149779 is a prime.

It is a super-2 number, since 2×36007149781² (a number of 22 digits) contains 22 as substring.

It is the 189756-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36007149751) by changing a digit.

It is a nontrivial repunit in base 189755.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64261 + ... + 275941.

It is an arithmetic number, because the mean of its divisors is an integer number (9001882891).

Almost surely, 2^36007149781 is an apocalyptic number.

It is an amenable number.

36007149781 is a deficient number, since it is larger than the sum of its proper divisors (381783).

36007149781 is a wasteful number, since it uses less digits than its factorization.

36007149781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381782.

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 36007149781 in words is "thirty-six billion, seven million, one hundred forty-nine thousand, seven hundred eighty-one".