21531455325041 has 8 divisors (see below), whose sum is σ = 22086055289760. Its totient is φ = 20979303926112.

The previous prime is 21531455325011. The next prime is 21531455325071. The reversal of 21531455325041 is 14052355413512.

It is an interprime number because it is at equal distance from previous prime (21531455325011) and next prime (21531455325071).

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 21531455325041 - 2²² = 21531451130737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21531455325041.

It is not an unprimeable number, because it can be changed into a prime (21531455325011) 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, 612123635 + ... + 612158808.

It is an arithmetic number, because the mean of its divisors is an integer number (2760756911220).

Almost surely, 2^{21531455325041} is an apocalyptic number.

It is an amenable number.

21531455325041 is a deficient number, since it is larger than the sum of its proper divisors (554599964719).

21531455325041 is a wasteful number, since it uses less digits than its factorization.

21531455325041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224282895.

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 21531455325041 in words is "twenty-one trillion, five hundred thirty-one billion, four hundred fifty-five million, three hundred twenty-five thousand, forty-one".