1085407134557 has 4 divisors (see below), whose sum is σ = 1114742462556. Its totient is φ = 1056071806560.

The previous prime is 1085407134547. The next prime is 1085407134577. The reversal of 1085407134557 is 7554317045801.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 589986827236 + 495420307321 = 768106^2 + 703861^2 .

It is a cyclic number.

It is not a de Polignac number, because 1085407134557 - 2¹² = 1085407130461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085407134547) 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, 14667663944 + ... + 14667664017.

It is an arithmetic number, because the mean of its divisors is an integer number (278685615639).

Almost surely, 2^{1085407134557} is an apocalyptic number.

It is an amenable number.

1085407134557 is a deficient number, since it is larger than the sum of its proper divisors (29335327999).

1085407134557 is an equidigital number, since it uses as much as digits as its factorization.

1085407134557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29335327998.

The product of its (nonzero) digits is 2352000, while the sum is 50.

The spelling of 1085407134557 in words is "one trillion, eighty-five billion, four hundred seven million, one hundred thirty-four thousand, five hundred fifty-seven".