10661040156 has 48 divisors (see below), whose sum is σ = 26837594784. Its totient is φ = 3274404096.

The previous prime is 10661040149. The next prime is 10661040179. The reversal of 10661040156 is 65104016601.

It is a super-2 number, since 2×10661040156² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25546 + ... + 148238.

It is an arithmetic number, because the mean of its divisors is an integer number (559116558).

Almost surely, 2^10661040156 is an apocalyptic number.

It is an amenable number.

10661040156 is an abundant number, since it is smaller than the sum of its proper divisors (16176554628).

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

10661040156 is a wasteful number, since it uses less digits than its factorization.

10661040156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123270 (or 123268 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 10661040156 its reverse (65104016601), we get a palindrome (75765056757).

It can be divided in two parts, 10 and 661040156, that added together give a palindrome (661040166).

The spelling of 10661040156 in words is "ten billion, six hundred sixty-one million, forty thousand, one hundred fifty-six".