10415865640 has 32 divisors (see below), whose sum is σ = 23457717000. Its totient is φ = 4162431744.

The previous prime is 10415865637. The next prime is 10415865641. The reversal of 10415865640 is 4656851401.

It can be written as a sum of positive squares in 4 ways, for example, as 4852794244 + 5563071396 = 69662^2 + 74586^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 10415865593 and 10415865602.

It is not an unprimeable number, because it can be changed into a prime (10415865641) 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 7 ways as a sum of consecutive naturals, for example, 79035 + ... + 164554.

Almost surely, 2^10415865640 is an apocalyptic number.

10415865640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10415865640 is an abundant number, since it is smaller than the sum of its proper divisors (13041851360).

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

10415865640 is a wasteful number, since it uses less digits than its factorization.

10415865640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244669 (or 244665 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 10415865640 in words is "ten billion, four hundred fifteen million, eight hundred sixty-five thousand, six hundred forty".