21376765407338 has 8 divisors (see below), whose sum is σ = 34980161575680. Its totient is φ = 9716711548780.

The previous prime is 21376765407337. The next prime is 21376765407377. The reversal of 21376765407338 is 83370456767312.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (21376765407331) 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, 485835577418 + ... + 485835577461.

It is an arithmetic number, because the mean of its divisors is an integer number (4372520196960).

Almost surely, 2^{21376765407338} is an apocalyptic number.

21376765407338 is a deficient number, since it is larger than the sum of its proper divisors (13603396168342).

21376765407338 is a wasteful number, since it uses less digits than its factorization.

21376765407338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971671154892.

The product of its (nonzero) digits is 106686720, while the sum is 62.

The spelling of 21376765407338 in words is "twenty-one trillion, three hundred seventy-six billion, seven hundred sixty-five million, four hundred seven thousand, three hundred thirty-eight".