1015507280640 has 576 divisors, whose sum is σ = 3387284619264. Its totient is φ = 259071934464.

The previous prime is 1015507280569. The next prime is 1015507280651. The reversal of 1015507280640 is 460827055101.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3013374552 + ... + 3013374888.

It is an arithmetic number, because the mean of its divisors is an integer number (5880702464).

Almost surely, 2^{1015507280640} is an apocalyptic number.

1015507280640 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 1015507280640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1693642309632).

1015507280640 is an abundant number, since it is smaller than the sum of its proper divisors (2371777338624).

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

1015507280640 is a wasteful number, since it uses less digits than its factorization.

1015507280640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The spelling of 1015507280640 in words is "one trillion, fifteen billion, five hundred seven million, two hundred eighty thousand, six hundred forty".