1155316526857 has 8 divisors (see below), whose sum is σ = 1157073520680. Its totient is φ = 1153560545280.

The previous prime is 1155316526851. The next prime is 1155316526863. The reversal of 1155316526857 is 7586256135511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1155316526851) and next prime (1155316526863).

It can be written as a sum of positive squares in 4 ways, for example, as 312498888256 + 842817638601 = 559016^2 + 918051^2 .

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 1155316526857 - 2¹⁵ = 1155316494089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1155316526798 and 1155316526807.

It is not an unprimeable number, because it can be changed into a prime (1155316526851) 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, 2047213 + ... + 2549845.

It is an arithmetic number, because the mean of its divisors is an integer number (144634190085).

Almost surely, 2^{1155316526857} is an apocalyptic number.

It is an amenable number.

1155316526857 is a deficient number, since it is larger than the sum of its proper divisors (1756993823).

1155316526857 is an equidigital number, since it uses as much as digits as its factorization.

1155316526857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506123.

The product of its digits is 7560000, while the sum is 55.

The spelling of 1155316526857 in words is "one trillion, one hundred fifty-five billion, three hundred sixteen million, five hundred twenty-six thousand, eight hundred fifty-seven".