21436530739299 has 16 divisors (see below), whose sum is σ = 34200732804000. Its totient is φ = 13191711223968.

The previous prime is 21436530739291. The next prime is 21436530739303. The reversal of 21436530739299 is 99293703563412.

21436530739299 is a `hidden beast` number, since 2 + 1 + 4 + 3 + 6 + 5 + 307 + 39 + 299 = 666.

It is not a de Polignac number, because 21436530739299 - 2³ = 21436530739291 is a prime.

It is a super-2 number, since 2×21436530739299² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21436530739291) 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 in 15 ways as a sum of consecutive naturals, for example, 30536368224 + ... + 30536368925.

It is an arithmetic number, because the mean of its divisors is an integer number (2137545800250).

Almost surely, 2^{21436530739299} is an apocalyptic number.

21436530739299 is a deficient number, since it is larger than the sum of its proper divisors (12764202064701).

21436530739299 is a wasteful number, since it uses less digits than its factorization.

21436530739299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61072737171 (or 61072737165 counting only the distinct ones).

The product of its (nonzero) digits is 66134880, while the sum is 63.

The spelling of 21436530739299 in words is "twenty-one trillion, four hundred thirty-six billion, five hundred thirty million, seven hundred thirty-nine thousand, two hundred ninety-nine".