100033136621065 has 4 divisors (see below), whose sum is σ = 120039763945284. Its totient is φ = 80026509296848.

The previous prime is 100033136621021. The next prime is 100033136621087. The reversal of 100033136621065 is 560126631330001.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 79238268921744 + 20794867699321 = 8901588^2 + 4560139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100033136621065 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10003313662102 + ... + 10003313662111.

It is an arithmetic number, because the mean of its divisors is an integer number (30009940986321).

Almost surely, 2^{100033136621065} is an apocalyptic number.

It is an amenable number.

100033136621065 is a deficient number, since it is larger than the sum of its proper divisors (20006627324219).

100033136621065 is an equidigital number, since it uses as much as digits as its factorization.

100033136621065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20006627324218.

The product of its (nonzero) digits is 58320, while the sum is 37.

Adding to 100033136621065 its reverse (560126631330001), we get a palindrome (660159767951066).

The spelling of 100033136621065 in words is "one hundred trillion, thirty-three billion, one hundred thirty-six million, six hundred twenty-one thousand, sixty-five".