2001031500051 has 12 divisors (see below), whose sum is σ = 2890408365000. Its totient is φ = 1334007370080.

The previous prime is 2001031500043. The next prime is 2001031500077. The reversal of 2001031500051 is 1500051301002.

It is not a de Polignac number, because 2001031500051 - 2³ = 2001031500043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001031499997 and 2001031500033.

It is not an unprimeable number, because it can be changed into a prime (2001031500031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162090 + ... + 2007071.

It is an arithmetic number, because the mean of its divisors is an integer number (240867363750).

Almost surely, 2^{2001031500051} is an apocalyptic number.

2001031500051 is a deficient number, since it is larger than the sum of its proper divisors (889376864949).

2001031500051 is a wasteful number, since it uses less digits than its factorization.

2001031500051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271666 (or 2271663 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

Adding to 2001031500051 its reverse (1500051301002), we get a palindrome (3501082801053).

The spelling of 2001031500051 in words is "two trillion, one billion, thirty-one million, five hundred thousand, fifty-one".