21125741353 has 8 divisors (see below), whose sum is σ = 21235703328. Its totient is φ = 21016062144.

The previous prime is 21125741327. The next prime is 21125741387. The reversal of 21125741353 is 35314752112.

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 21125741353 - 2⁵ = 21125741321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21125741393) 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, 79950 + ... + 220552.

It is an arithmetic number, because the mean of its divisors is an integer number (2654462916).

Almost surely, 2^21125741353 is an apocalyptic number.

It is an amenable number.

21125741353 is a deficient number, since it is larger than the sum of its proper divisors (109961975).

21125741353 is a wasteful number, since it uses less digits than its factorization.

21125741353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141383.

The product of its digits is 25200, while the sum is 34.

The spelling of 21125741353 in words is "twenty-one billion, one hundred twenty-five million, seven hundred forty-one thousand, three hundred fifty-three".