10645478630440 has 128 divisors (see below), whose sum is σ = 25675806280320. Its totient is φ = 3958041600000.

The previous prime is 10645478630393. The next prime is 10645478630441. The reversal of 10645478630440 is 4403687454601.

It is a super-2 number, since 2×10645478630440² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (10645478630441) by changing a digit.

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, 169345015 + ... + 169407865.

It is an arithmetic number, because the mean of its divisors is an integer number (200592236565).

Almost surely, 2^{10645478630440} is an apocalyptic number.

10645478630440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10645478630440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12837903140160).

10645478630440 is an abundant number, since it is smaller than the sum of its proper divisors (15030327649880).

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

10645478630440 is a wasteful number, since it uses less digits than its factorization.

10645478630440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65963 (or 65959 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 52.

The spelling of 10645478630440 in words is "ten trillion, six hundred forty-five billion, four hundred seventy-eight million, six hundred thirty thousand, four hundred forty".