1040651534440 has 64 divisors (see below), whose sum is σ = 2676917784960. Its totient is φ = 356667252480.

The previous prime is 1040651534437. The next prime is 1040651534449. The reversal of 1040651534440 is 444351560401.

It is a super-2 number, since 2×1040651534440² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1040651534440.

It is not an unprimeable number, because it can be changed into a prime (1040651534449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121870 + ... + 1447810.

It is an arithmetic number, because the mean of its divisors is an integer number (41826840390).

Almost surely, 2^{1040651534440} is an apocalyptic number.

1040651534440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040651534440 is an abundant number, since it is smaller than the sum of its proper divisors (1636266250520).

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

1040651534440 is a wasteful number, since it uses less digits than its factorization.

1040651534440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328762 (or 1328758 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 1040651534440 in words is "one trillion, forty billion, six hundred fifty-one million, five hundred thirty-four thousand, four hundred forty".