21625040241043 has 8 divisors (see below), whose sum is σ = 21663753101312. Its totient is φ = 21586337535816.

The previous prime is 21625040241041. The next prime is 21625040241097. The reversal of 21625040241043 is 34014204052612.

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 21625040241043 - 2¹ = 21625040241041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21625040241041) 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, 1730446 + ... + 6800332.

It is an arithmetic number, because the mean of its divisors is an integer number (2707969137664).

Almost surely, 2^{21625040241043} is an apocalyptic number.

21625040241043 is a deficient number, since it is larger than the sum of its proper divisors (38712860269).

21625040241043 is an equidigital number, since it uses as much as digits as its factorization.

21625040241043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5077521.

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 21625040241043 its reverse (34014204052612), we get a palindrome (55639244293655).

The spelling of 21625040241043 in words is "twenty-one trillion, six hundred twenty-five billion, forty million, two hundred forty-one thousand, forty-three".