10661050040 has 32 divisors (see below), whose sum is σ = 24761151360. Its totient is φ = 4126857600.

The previous prime is 10661050007. The next prime is 10661050063. The reversal of 10661050040 is 4005016601.

It is a super-2 number, since 2×10661050040² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10661049988 and 10661050015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4297571 + ... + 4300050.

It is an arithmetic number, because the mean of its divisors is an integer number (773785980).

Almost surely, 2^10661050040 is an apocalyptic number.

10661050040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10661050040 is an abundant number, since it is smaller than the sum of its proper divisors (14100101320).

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

10661050040 is a wasteful number, since it uses less digits than its factorization.

10661050040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8597663 (or 8597659 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 10661050040 its reverse (4005016601), we get a palindrome (14666066641).

The spelling of 10661050040 in words is "ten billion, six hundred sixty-one million, fifty thousand, forty".