10661200074 has 160 divisors (see below), whose sum is σ = 28687988736. Its totient is φ = 2893255200.

The previous prime is 10661200061. The next prime is 10661200079. The reversal of 10661200074 is 47000216601.

It is a super-2 number, since 2×10661200074² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (10661200079) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3937029 + ... + 3939735.

Almost surely, 2^10661200074 is an apocalyptic number.

10661200074 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10661200074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14343994368).

10661200074 is an abundant number, since it is smaller than the sum of its proper divisors (18026788662).

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

10661200074 is a wasteful number, since it uses less digits than its factorization.

10661200074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902 (or 2893 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

Adding to 10661200074 its reverse (47000216601), we get a palindrome (57661416675).

The spelling of 10661200074 in words is "ten billion, six hundred sixty-one million, two hundred thousand, seventy-four".