10561207621 has 8 divisors (see below), whose sum is σ = 10887341760. Its totient is φ = 10239977952.

The previous prime is 10561207607. The next prime is 10561207633. The reversal of 10561207621 is 12670216501.

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 10561207621 - 2¹⁹ = 10560683333 is a prime.

It is a super-3 number, since 3×10561207621³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10561207651) 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, 1221745 + ... + 1230358.

It is an arithmetic number, because the mean of its divisors is an integer number (1360917720).

Almost surely, 2^10561207621 is an apocalyptic number.

It is an amenable number.

10561207621 is a deficient number, since it is larger than the sum of its proper divisors (326134139).

10561207621 is an equidigital number, since it uses as much as digits as its factorization.

10561207621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452235.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 10561207621 in words is "ten billion, five hundred sixty-one million, two hundred seven thousand, six hundred twenty-one".