10021520544 has 48 divisors (see below), whose sum is σ = 30064563648. Its totient is φ = 2863291392.

The previous prime is 10021520533. The next prime is 10021520549. The reversal of 10021520544 is 44502512001.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (10021520549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7455817 + ... + 7457160.

It is an arithmetic number, because the mean of its divisors is an integer number (626345076).

Almost surely, 2^10021520544 is an apocalyptic number.

10021520544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

10021520544 is an abundant number, since it is smaller than the sum of its proper divisors (20043043104).

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

10021520544 is a wasteful number, since it uses less digits than its factorization.

10021520544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14912997 (or 14912989 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The spelling of 10021520544 in words is "ten billion, twenty-one million, five hundred twenty thousand, five hundred forty-four".