2001506366451 has 4 divisors (see below), whose sum is σ = 2668675155272. Its totient is φ = 1334337577632.

The previous prime is 2001506366401. The next prime is 2001506366513. The reversal of 2001506366451 is 1546636051002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2001506366451 - 2¹³ = 2001506358259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001506366401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333584394406 + ... + 333584394411.

It is an arithmetic number, because the mean of its divisors is an integer number (667168788818).

Almost surely, 2^{2001506366451} is an apocalyptic number.

2001506366451 is a deficient number, since it is larger than the sum of its proper divisors (667168788821).

2001506366451 is an equidigital number, since it uses as much as digits as its factorization.

2001506366451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667168788820.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 2001506366451 in words is "two trillion, one billion, five hundred six million, three hundred sixty-six thousand, four hundred fifty-one".