36778052161 has 8 divisors (see below), whose sum is σ = 38945684520. Its totient is φ = 34610888448.

The previous prime is 36778052159. The next prime is 36778052173. The reversal of 36778052161 is 16125087763.

It can be written as a sum of positive squares in 4 ways, for example, as 33606222400 + 3171829761 = 183320^2 + 56319^2 .

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 36778052161 - 2¹ = 36778052159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36778052141) 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, 51355 + ... + 276031.

It is an arithmetic number, because the mean of its divisors is an integer number (4868210565).

Almost surely, 2^36778052161 is an apocalyptic number.

It is an amenable number.

36778052161 is a deficient number, since it is larger than the sum of its proper divisors (2167632359).

36778052161 is a wasteful number, since it uses less digits than its factorization.

36778052161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234323.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 36778052161 in words is "thirty-six billion, seven hundred seventy-eight million, fifty-two thousand, one hundred sixty-one".