1078863271553 has 4 divisors (see below), whose sum is σ = 1078951519920. Its totient is φ = 1078775023188.

The previous prime is 1078863271543. The next prime is 1078863271561. The reversal of 1078863271553 is 3551723688701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1078863271553 - 2¹⁸ = 1078863009409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1078863271543) 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, 44105843 + ... + 44130296.

It is an arithmetic number, because the mean of its divisors is an integer number (269737879980).

Almost surely, 2^{1078863271553} is an apocalyptic number.

It is an amenable number.

1078863271553 is a deficient number, since it is larger than the sum of its proper divisors (88248367).

1078863271553 is an equidigital number, since it uses as much as digits as its factorization.

1078863271553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88248366.

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 1078863271553 in words is "one trillion, seventy-eight billion, eight hundred sixty-three million, two hundred seventy-one thousand, five hundred fifty-three".