1056028367861 has 4 divisors (see below), whose sum is σ = 1056249160512. Its totient is φ = 1055807575212.

The previous prime is 1056028367857. The next prime is 1056028367897. The reversal of 1056028367861 is 1687638206501.

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 1056028367861 - 2² = 1056028367857 is a prime.

It is a super-2 number, since 2×1056028367861² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056028360861) 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, 110389151 + ... + 110398716.

It is an arithmetic number, because the mean of its divisors is an integer number (264062290128).

Almost surely, 2^{1056028367861} is an apocalyptic number.

It is an amenable number.

1056028367861 is a deficient number, since it is larger than the sum of its proper divisors (220792651).

1056028367861 is an equidigital number, since it uses as much as digits as its factorization.

1056028367861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220792650.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 1056028367861 in words is "one trillion, fifty-six billion, twenty-eight million, three hundred sixty-seven thousand, eight hundred sixty-one".