1055143553615 has 4 divisors (see below), whose sum is σ = 1266172264344. Its totient is φ = 844114842888.

The previous prime is 1055143553599. The next prime is 1055143553623. The reversal of 1055143553615 is 5163553415501.

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 1055143553615 - 2⁴ = 1055143553599 is a prime.

It is a super-2 number, since 2×1055143553615² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105514355357 + ... + 105514355366.

It is an arithmetic number, because the mean of its divisors is an integer number (316543066086).

Almost surely, 2^{1055143553615} is an apocalyptic number.

1055143553615 is a deficient number, since it is larger than the sum of its proper divisors (211028710729).

1055143553615 is an equidigital number, since it uses as much as digits as its factorization.

1055143553615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211028710728.

The product of its (nonzero) digits is 675000, while the sum is 44.

The spelling of 1055143553615 in words is "one trillion, fifty-five billion, one hundred forty-three million, five hundred fifty-three thousand, six hundred fifteen".