10661640462 has 24 divisors (see below), whose sum is σ = 25200241560. Its totient is φ = 3230800080.

The previous prime is 10661640427. The next prime is 10661640463. The reversal of 10661640462 is 26404616601.

10661640462 is a `hidden beast` number, since 1 + 0 + 6 + 6 + 1 + 640 + 4 + 6 + 2 = 666.

It is a super-2 number, since 2×10661640462² (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 (10661640463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26923137 + ... + 26923532.

It is an arithmetic number, because the mean of its divisors is an integer number (1050010065).

Almost surely, 2^10661640462 is an apocalyptic number.

10661640462 is an abundant number, since it is smaller than the sum of its proper divisors (14538601098).

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

10661640462 is a wasteful number, since it uses less digits than its factorization.

10661640462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53846688 (or 53846685 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 10661640462 in words is "ten billion, six hundred sixty-one million, six hundred forty thousand, four hundred sixty-two".