1015040040 has 128 divisors (see below), whose sum is σ = 3663360000. Its totient is φ = 219794688.

The previous prime is 1015039999. The next prime is 1015040053. The reversal of 1015040040 is 400405101.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15840 + ... + 47759.

It is an arithmetic number, because the mean of its divisors is an integer number (28620000).

Almost surely, 2^1015040040 is an apocalyptic number.

1015040040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1015040040 is an abundant number, since it is smaller than the sum of its proper divisors (2648319960).

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

1015040040 is a wasteful number, since it uses less digits than its factorization.

1015040040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63639 (or 63635 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1015040040 is about 31859.6930305362. The cubic root of 1015040040 is about 1004.9884209453.

Adding to 1015040040 its reverse (400405101), we get a palindrome (1415445141).

The spelling of 1015040040 in words is "one billion, fifteen million, forty thousand, forty".