10021453515 has 32 divisors (see below), whose sum is σ = 18297437760. Its totient is φ = 5200319232.

The previous prime is 10021453493. The next prime is 10021453553. The reversal of 10021453515 is 51535412001.

10021453515 is a `hidden beast` number, since 1 + 0 + 0 + 2 + 145 + 3 + 515 = 666.

10021453515 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10021453515 - 2¹² = 10021449419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 998154 + ... + 1008143.

It is an arithmetic number, because the mean of its divisors is an integer number (571794930).

Almost surely, 2^10021453515 is an apocalyptic number.

10021453515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10021453515 is a deficient number, since it is larger than the sum of its proper divisors (8275984245).

10021453515 is a wasteful number, since it uses less digits than its factorization.

10021453515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006348 (or 2006342 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 10021453515 its reverse (51535412001), we get a palindrome (61556865516).

The spelling of 10021453515 in words is "ten billion, twenty-one million, four hundred fifty-three thousand, five hundred fifteen".