21616601262034 has 4 divisors (see below), whose sum is σ = 32424901893054. Its totient is φ = 10808300631016.

The previous prime is 21616601261939. The next prime is 21616601262037. The reversal of 21616601262034 is 43026210661612.

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

It can be written as a sum of positive squares in only one way, i.e., 19762496923009 + 1854104339025 = 4445503^2 + 1361655^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (21616601262037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5404150315507 + ... + 5404150315510.

Almost surely, 2^{21616601262034} is an apocalyptic number.

21616601262034 is a deficient number, since it is larger than the sum of its proper divisors (10808300631020).

21616601262034 is a wasteful number, since it uses less digits than its factorization.

21616601262034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10808300631019.

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 21616601262034 in words is "twenty-one trillion, six hundred sixteen billion, six hundred one million, two hundred sixty-two thousand, thirty-four".