21376106761517 has 8 divisors (see below), whose sum is σ = 22094781096480. Its totient is φ = 20669311341360.

The previous prime is 21376106761459. The next prime is 21376106761523. The reversal of 21376106761517 is 71516760167312.

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

It is a cyclic number.

It is not a de Polignac number, because 21376106761517 - 2⁶ = 21376106761453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21376106761117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2969725043 + ... + 2969732240.

It is an arithmetic number, because the mean of its divisors is an integer number (2761847637060).

Almost surely, 2^{21376106761517} is an apocalyptic number.

It is an amenable number.

21376106761517 is a deficient number, since it is larger than the sum of its proper divisors (718674334963).

21376106761517 is an equidigital number, since it uses as much as digits as its factorization.

21376106761517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5939457403.

The product of its (nonzero) digits is 2222640, while the sum is 53.

The spelling of 21376106761517 in words is "twenty-one trillion, three hundred seventy-six billion, one hundred six million, seven hundred sixty-one thousand, five hundred seventeen".