1015660602440 has 128 divisors (see below), whose sum is σ = 2724781317120. Its totient is φ = 336392601600.

The previous prime is 1015660602433. The next prime is 1015660602449. The reversal of 1015660602440 is 442060665101.

It is a self number, because there is not a number n which added to its sum of digits gives 1015660602440.

It is not an unprimeable number, because it can be changed into a prime (1015660602449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1958177 + ... + 2421936.

It is an arithmetic number, because the mean of its divisors is an integer number (21287354040).

Almost surely, 2^{1015660602440} is an apocalyptic number.

1015660602440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1015660602440 is an abundant number, since it is smaller than the sum of its proper divisors (1709120714680).

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

1015660602440 is a wasteful number, since it uses less digits than its factorization.

1015660602440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380183 (or 4380179 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 1015660602440 in words is "one trillion, fifteen billion, six hundred sixty million, six hundred two thousand, four hundred forty".