1028867545531 has 8 divisors (see below), whose sum is σ = 1237735393280. Its totient is φ = 835471390248.

The previous prime is 1028867545523. The next prime is 1028867545549. The reversal of 1028867545531 is 1355457688201.

It is a happy number.

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 1028867545531 - 2³ = 1028867545523 is a prime.

It is a super-2 number, since 2×1028867545531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028867542531) 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, 3867922971 + ... + 3867923236.

It is an arithmetic number, because the mean of its divisors is an integer number (154716924160).

Almost surely, 2^{1028867545531} is an apocalyptic number.

1028867545531 is a deficient number, since it is larger than the sum of its proper divisors (208867847749).

1028867545531 is an equidigital number, since it uses as much as digits as its factorization.

1028867545531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7735846233.

The product of its (nonzero) digits is 8064000, while the sum is 55.

The spelling of 1028867545531 in words is "one trillion, twenty-eight billion, eight hundred sixty-seven million, five hundred forty-five thousand, five hundred thirty-one".