10321500440 has 16 divisors (see below), whose sum is σ = 23223376080. Its totient is φ = 4128600160.

The previous prime is 10321500361. The next prime is 10321500463. The reversal of 10321500440 is 4400512301.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129018716 + ... + 129018795.

It is an arithmetic number, because the mean of its divisors is an integer number (1451461005).

Almost surely, 2^10321500440 is an apocalyptic number.

10321500440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10321500440 is an abundant number, since it is smaller than the sum of its proper divisors (12901875640).

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

10321500440 is a wasteful number, since it uses less digits than its factorization.

10321500440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258037522 (or 258037518 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The spelling of 10321500440 in words is "ten billion, three hundred twenty-one million, five hundred thousand, four hundred forty".