20524540015 has 16 divisors (see below), whose sum is σ = 29371765248. Its totient is φ = 13462058016.

The previous prime is 20524539983. The next prime is 20524540019. The reversal of 20524540015 is 51004542502.

It is a cyclic number.

It is not a de Polignac number, because 20524540015 - 2⁵ = 20524539983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20524540019) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12747357 + ... + 12748966.

It is an arithmetic number, because the mean of its divisors is an integer number (1835735328).

Almost surely, 2^20524540015 is an apocalyptic number.

20524540015 is a deficient number, since it is larger than the sum of its proper divisors (8847225233).

20524540015 is a wasteful number, since it uses less digits than its factorization.

20524540015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25496358.

The product of its (nonzero) digits is 8000, while the sum is 28.

The spelling of 20524540015 in words is "twenty billion, five hundred twenty-four million, five hundred forty thousand, fifteen".