21032117570353 has 16 divisors (see below), whose sum is σ = 21505259543040. Its totient is φ = 20560053096000.

The previous prime is 21032117570329. The next prime is 21032117570419. The reversal of 21032117570353 is 35307571123012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21032117570353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21032117570323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236003503 + ... + 236092603.

It is an arithmetic number, because the mean of its divisors is an integer number (1344078721440).

Almost surely, 2^{21032117570353} is an apocalyptic number.

It is an amenable number.

21032117570353 is a deficient number, since it is larger than the sum of its proper divisors (473141972687).

21032117570353 is a wasteful number, since it uses less digits than its factorization.

21032117570353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95088.

The product of its (nonzero) digits is 132300, while the sum is 40.

Adding to 21032117570353 its reverse (35307571123012), we get a palindrome (56339688693365).

The spelling of 21032117570353 in words is "twenty-one trillion, thirty-two billion, one hundred seventeen million, five hundred seventy thousand, three hundred fifty-three".