20315126414015 has 16 divisors (see below), whose sum is σ = 25970383555200. Its totient is φ = 15211224641952.

The previous prime is 20315126414003. The next prime is 20315126414029. The reversal of 20315126414015 is 51041462151302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20315126414015 - 2³⁶ = 20246406937279 is a prime.

It is a super-2 number, since 2×20315126414015² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1288205585 + ... + 1288221354.

It is an arithmetic number, because the mean of its divisors is an integer number (1623148972200).

Almost surely, 2^{20315126414015} is an apocalyptic number.

20315126414015 is a deficient number, since it is larger than the sum of its proper divisors (5655257141185).

20315126414015 is a wasteful number, since it uses less digits than its factorization.

20315126414015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576427046.

The product of its (nonzero) digits is 28800, while the sum is 35.

Adding to 20315126414015 its reverse (51041462151302), we get a palindrome (71356588565317).

The spelling of 20315126414015 in words is "twenty trillion, three hundred fifteen billion, one hundred twenty-six million, four hundred fourteen thousand, fifteen".