36721878055 has 4 divisors (see below), whose sum is σ = 44066253672. Its totient is φ = 29377502440.

The previous prime is 36721878031. The next prime is 36721878059. The reversal of 36721878055 is 55087812763.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 36721878055 - 2³⁵ = 2362139687 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36721877993 and 36721878011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36721878059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3672187801 + ... + 3672187810.

It is an arithmetic number, because the mean of its divisors is an integer number (11016563418).

Almost surely, 2^36721878055 is an apocalyptic number.

36721878055 is a deficient number, since it is larger than the sum of its proper divisors (7344375617).

36721878055 is an equidigital number, since it uses as much as digits as its factorization.

36721878055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7344375616.

The product of its (nonzero) digits is 2822400, while the sum is 52.

The spelling of 36721878055 in words is "thirty-six billion, seven hundred twenty-one million, eight hundred seventy-eight thousand, fifty-five".