20415660040523 has 8 divisors (see below), whose sum is σ = 22585314053376. Its totient is φ = 18298286847400.

The previous prime is 20415660040409. The next prime is 20415660040547. The reversal of 20415660040523 is 32504006651402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20415660040523 - 2²⁶ = 20415592931659 is a prime.

It is a super-2 number, since 2×20415660040523² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20415660043523) 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 7 ways as a sum of consecutive naturals, for example, 13070204111 + ... + 13070205672.

It is an arithmetic number, because the mean of its divisors is an integer number (2823164256672).

Almost surely, 2^{20415660040523} is an apocalyptic number.

20415660040523 is a deficient number, since it is larger than the sum of its proper divisors (2169654012853).

20415660040523 is a wasteful number, since it uses less digits than its factorization.

20415660040523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26140409865.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 20415660040523 its reverse (32504006651402), we get a palindrome (52919666691925).

The spelling of 20415660040523 in words is "twenty trillion, four hundred fifteen billion, six hundred sixty million, forty thousand, five hundred twenty-three".