10661520453 has 8 divisors (see below), whose sum is σ = 14218761216. Its totient is φ = 7105980000.

The previous prime is 10661520451. The next prime is 10661520469. The reversal of 10661520453 is 35402516601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10661520453 - 2¹ = 10661520451 is a prime.

It is a super-2 number, since 2×10661520453² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10661520451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410373 + ... + 435578.

It is an arithmetic number, because the mean of its divisors is an integer number (1777345152).

Almost surely, 2^10661520453 is an apocalyptic number.

It is an amenable number.

10661520453 is a deficient number, since it is larger than the sum of its proper divisors (3557240763).

10661520453 is an equidigital number, since it uses as much as digits as its factorization.

10661520453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850155.

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 10661520453 in words is "ten billion, six hundred sixty-one million, five hundred twenty thousand, four hundred fifty-three".