1651460663551 has 4 divisors (see below), whose sum is σ = 1651626799704. Its totient is φ = 1651294527400.

The previous prime is 1651460663543. The next prime is 1651460663591. The reversal of 1651460663551 is 1553660641561.

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

It is a cyclic number.

It is not a de Polignac number, because 1651460663551 - 2³ = 1651460663543 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1651460663495 and 1651460663504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1651460663591) 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, 83053165 + ... + 83073046.

It is an arithmetic number, because the mean of its divisors is an integer number (412906699926).

Almost surely, 2^{1651460663551} is an apocalyptic number.

1651460663551 is a deficient number, since it is larger than the sum of its proper divisors (166136153).

1651460663551 is an equidigital number, since it uses as much as digits as its factorization.

1651460663551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166136152.

The product of its (nonzero) digits is 1944000, while the sum is 49.

The spelling of 1651460663551 in words is "one trillion, six hundred fifty-one billion, four hundred sixty million, six hundred sixty-three thousand, five hundred fifty-one".