21160510506433 has 4 divisors (see below), whose sum is σ = 21161060754480. Its totient is φ = 21159960258388.

The previous prime is 21160510506419. The next prime is 21160510506469. The reversal of 21160510506433 is 33460501506112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21160510506433 - 2¹³ = 21160510498241 is a prime.

It is a super-2 number, since 2×21160510506433² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21160510506392 and 21160510506401.

It is not an unprimeable number, because it can be changed into a prime (21160510506403) 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, 275066335 + ... + 275143252.

It is an arithmetic number, because the mean of its divisors is an integer number (5290265188620).

Almost surely, 2^{21160510506433} is an apocalyptic number.

It is an amenable number.

21160510506433 is a deficient number, since it is larger than the sum of its proper divisors (550248047).

21160510506433 is an equidigital number, since it uses as much as digits as its factorization.

21160510506433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550248046.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 21160510506433 in words is "twenty-one trillion, one hundred sixty billion, five hundred ten million, five hundred six thousand, four hundred thirty-three".