20015034052123 has 6 divisors (see below), whose sum is σ = 21999996107012. Its totient is φ = 18195485501820.

The previous prime is 20015034052031. The next prime is 20015034052141. The reversal of 20015034052123 is 32125043051002.

It is a de Polignac number, because none of the positive numbers 2^k-20015034052123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20015034052091 and 20015034052100.

It is not an unprimeable number, because it can be changed into a prime (20015034052423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82706752161 + ... + 82706752402.

Almost surely, 2^{20015034052123} is an apocalyptic number.

20015034052123 is a deficient number, since it is larger than the sum of its proper divisors (1984962054889).

20015034052123 is a wasteful number, since it uses less digits than its factorization.

20015034052123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165413504585 (or 165413504574 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 20015034052123 in words is "twenty trillion, fifteen billion, thirty-four million, fifty-two thousand, one hundred twenty-three".