21450611103413 has 8 divisors (see below), whose sum is σ = 21512683168896. Its totient is φ = 21388628160000.

The previous prime is 21450611103409. The next prime is 21450611103433. The reversal of 21450611103413 is 31430111605412.

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 21450611103413 - 2² = 21450611103409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21450611103413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21450611103433) 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, 21798431 + ... + 22761212.

It is an arithmetic number, because the mean of its divisors is an integer number (2689085396112).

Almost surely, 2^{21450611103413} is an apocalyptic number.

It is an amenable number.

21450611103413 is a deficient number, since it is larger than the sum of its proper divisors (62072065483).

21450611103413 is an equidigital number, since it uses as much as digits as its factorization.

21450611103413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44561035.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 21450611103413 its reverse (31430111605412), we get a palindrome (52880722708825).

The spelling of 21450611103413 in words is "twenty-one trillion, four hundred fifty billion, six hundred eleven million, one hundred three thousand, four hundred thirteen".