1040534566440 has 64 divisors (see below), whose sum is σ = 3152510703360. Its totient is φ = 274728595200.

The previous prime is 1040534566417. The next prime is 1040534566451. The reversal of 1040534566440 is 446654350401.

It is a junction number, because it is equal to n+sod(n) for n = 1040534566392 and 1040534566401.

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, 42914224 + ... + 42938463.

It is an arithmetic number, because the mean of its divisors is an integer number (49257979740).

Almost surely, 2^{1040534566440} is an apocalyptic number.

1040534566440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040534566440 is an abundant number, since it is smaller than the sum of its proper divisors (2111976136920).

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

1040534566440 is a wasteful number, since it uses less digits than its factorization.

1040534566440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85852802 (or 85852798 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 1040534566440 in words is "one trillion, forty billion, five hundred thirty-four million, five hundred sixty-six thousand, four hundred forty".