21376029659 has 8 divisors (see below), whose sum is σ = 22151878320. Its totient is φ = 20602764000.

The previous prime is 21376029613. The next prime is 21376029679. The reversal of 21376029659 is 95692067312.

It is a happy number.

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 21376029659 - 2¹⁶ = 21375964123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21376029679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628892 + ... + 662009.

It is an arithmetic number, because the mean of its divisors is an integer number (2768984790).

Almost surely, 2^21376029659 is an apocalyptic number.

21376029659 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

21376029659 is a deficient number, since it is larger than the sum of its proper divisors (775848661).

21376029659 is a wasteful number, since it uses less digits than its factorization.

21376029659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291501.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 21376029659 in words is "twenty-one billion, three hundred seventy-six million, twenty-nine thousand, six hundred fifty-nine".