21436692303 has 8 divisors (see below), whose sum is σ = 30780891568. Its totient is φ = 13191810624.

The previous prime is 21436692227. The next prime is 21436692341. The reversal of 21436692303 is 30329663412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21436692303 - 2¹⁸ = 21436430159 is a prime.

It is a super-3 number, since 3×21436692303³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 549658777 = 21436692303 / (2 + 1 + 4 + 3 + 6 + 6 + 9 + 2 + 3 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21436612303) 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, 274829350 + ... + 274829427.

It is an arithmetic number, because the mean of its divisors is an integer number (3847611446).

Almost surely, 2^21436692303 is an apocalyptic number.

21436692303 is a deficient number, since it is larger than the sum of its proper divisors (9344199265).

21436692303 is a wasteful number, since it uses less digits than its factorization.

21436692303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549658793.

The product of its (nonzero) digits is 139968, while the sum is 39.

The spelling of 21436692303 in words is "twenty-one billion, four hundred thirty-six million, six hundred ninety-two thousand, three hundred three".