36887201661 has 32 divisors (see below), whose sum is σ = 51916059648. Its totient is φ = 23264017920.

The previous prime is 36887201641. The next prime is 36887201693. The reversal of 36887201661 is 16610278863.

36887201661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 36887201661 - 2⁵ = 36887201629 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 36887201661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36887201641) 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, 1351825 + ... + 1378841.

It is an arithmetic number, because the mean of its divisors is an integer number (1622376864).

Almost surely, 2^36887201661 is an apocalyptic number.

36887201661 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

36887201661 is a deficient number, since it is larger than the sum of its proper divisors (15028857987).

36887201661 is a wasteful number, since it uses less digits than its factorization.

36887201661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27381.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 36887201661 in words is "thirty-six billion, eight hundred eighty-seven million, two hundred one thousand, six hundred sixty-one".