10015455440 has 40 divisors (see below), whose sum is σ = 23298714888. Its totient is φ = 4003983360.

The previous prime is 10015455419. The next prime is 10015455469. The reversal of 10015455440 is 4455451001.

It can be written as a sum of positive squares in 4 ways, for example, as 62599744 + 9952855696 = 7912^2 + 99764^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116420 + ... + 183260.

Almost surely, 2^10015455440 is an apocalyptic number.

10015455440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10015455440 is an abundant number, since it is smaller than the sum of its proper divisors (13283259448).

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

10015455440 is a wasteful number, since it uses less digits than its factorization.

10015455440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68727 (or 68721 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 10015455440 in words is "ten billion, fifteen million, four hundred fifty-five thousand, four hundred forty".