1051165643551 has 8 divisors (see below), whose sum is σ = 1055715897600. Its totient is φ = 1046616657240.

The previous prime is 1051165643527. The next prime is 1051165643581. The reversal of 1051165643551 is 1553465611501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1051165643551 - 2¹¹ = 1051165641503 is a prime.

It is a super-2 number, since 2×1051165643551² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1051165643498 and 1051165643507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051165643581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1364236 + ... + 1990846.

It is an arithmetic number, because the mean of its divisors is an integer number (131964487200).

Almost surely, 2^{1051165643551} is an apocalyptic number.

1051165643551 is a deficient number, since it is larger than the sum of its proper divisors (4550254049).

1051165643551 is an equidigital number, since it uses as much as digits as its factorization.

1051165643551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633869.

The product of its (nonzero) digits is 270000, while the sum is 43.

The spelling of 1051165643551 in words is "one trillion, fifty-one billion, one hundred sixty-five million, six hundred forty-three thousand, five hundred fifty-one".