21375028477353 has 8 divisors (see below), whose sum is σ = 29037774535488. Its totient is φ = 13981150702064.

The previous prime is 21375028477349. The next prime is 21375028477391. The reversal of 21375028477353 is 35377482057312.

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 21375028477353 - 2² = 21375028477349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21375028477293 and 21375028477302.

It is not an unprimeable number, because it can be changed into a prime (21375028477343) 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, 67217070525 + ... + 67217070842.

It is an arithmetic number, because the mean of its divisors is an integer number (3629721816936).

Almost surely, 2^{21375028477353} is an apocalyptic number.

It is an amenable number.

21375028477353 is a deficient number, since it is larger than the sum of its proper divisors (7662746058135).

21375028477353 is a wasteful number, since it uses less digits than its factorization.

21375028477353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134434141423.

The product of its (nonzero) digits is 29635200, while the sum is 57.

The spelling of 21375028477353 in words is "twenty-one trillion, three hundred seventy-five billion, twenty-eight million, four hundred seventy-seven thousand, three hundred fifty-three".