21036152716265 has 16 divisors (see below), whose sum is σ = 26835071325120. Its totient is φ = 15785336059200.

The previous prime is 21036152716253. The next prime is 21036152716309. The reversal of 21036152716265 is 56261725163012.

It is not a de Polignac number, because 21036152716265 - 2⁸ = 21036152716009 is a prime.

It is a super-2 number, since 2×21036152716265² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1096194299 + ... + 1096213488.

It is an arithmetic number, because the mean of its divisors is an integer number (1677191957820).

Almost surely, 2^{21036152716265} is an apocalyptic number.

It is an amenable number.

21036152716265 is a deficient number, since it is larger than the sum of its proper divisors (5798918608855).

21036152716265 is a wasteful number, since it uses less digits than its factorization.

21036152716265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192407912.

The product of its (nonzero) digits is 907200, while the sum is 47.

Adding to 21036152716265 its reverse (56261725163012), we get a palindrome (77297877879277).

The spelling of 21036152716265 in words is "twenty-one trillion, thirty-six billion, one hundred fifty-two million, seven hundred sixteen thousand, two hundred sixty-five".