1466631643551 has 32 divisors (see below), whose sum is σ = 1974427488000. Its totient is φ = 968347500288.

The previous prime is 1466631643537. The next prime is 1466631643567. The reversal of 1466631643551 is 1553461366641.

It is not a de Polignac number, because 1466631643551 - 2²⁵ = 1466598089119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1466631643494 and 1466631643503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1466631643571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144733081 + ... + 144743213.

It is an arithmetic number, because the mean of its divisors is an integer number (61700859000).

Almost surely, 2^{1466631643551} is an apocalyptic number.

1466631643551 is a deficient number, since it is larger than the sum of its proper divisors (507795844449).

1466631643551 is a wasteful number, since it uses less digits than its factorization.

1466631643551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11383.

The product of its digits is 4665600, while the sum is 51.

The spelling of 1466631643551 in words is "one trillion, four hundred sixty-six billion, six hundred thirty-one million, six hundred forty-three thousand, five hundred fifty-one".