10215420523 has 24 divisors (see below), whose sum is σ = 12846527456. Its totient is φ = 7951426560.

The previous prime is 10215420511. The next prime is 10215420541. The reversal of 10215420523 is 32502451201.

10215420523 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10215420523 - 2²¹ = 10213323371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10215420023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 838411 + ... + 850507.

Almost surely, 2^10215420523 is an apocalyptic number.

10215420523 is a deficient number, since it is larger than the sum of its proper divisors (2631106933).

10215420523 is a wasteful number, since it uses less digits than its factorization.

10215420523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13123 (or 13112 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 10215420523 its reverse (32502451201), we get a palindrome (42717871724).

The spelling of 10215420523 in words is "ten billion, two hundred fifteen million, four hundred twenty thousand, five hundred twenty-three".