10661001054 has 64 divisors (see below), whose sum is σ = 24110887680. Its totient is φ = 3112928000.

The previous prime is 10661000923. The next prime is 10661001089. The reversal of 10661001054 is 45010016601.

It is a super-2 number, since 2×10661001054² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 991849 + ... + 1002539.

It is an arithmetic number, because the mean of its divisors is an integer number (376732620).

Almost surely, 2^10661001054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10661001054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12055443840).

10661001054 is an abundant number, since it is smaller than the sum of its proper divisors (13449886626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10661001054 is a wasteful number, since it uses less digits than its factorization.

10661001054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11257.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 10661001054 its reverse (45010016601), we get a palindrome (55671017655).

The spelling of 10661001054 in words is "ten billion, six hundred sixty-one million, one thousand, fifty-four".