85537066073557 has 4 divisors (see below), whose sum is σ = 97756646941216. Its totient is φ = 73317485205900.

The previous prime is 85537066073477. The next prime is 85537066073579. The reversal of 85537066073557 is 75537066073558.

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 a de Polignac number, because none of the positive numbers 2^k-85537066073557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85537066073492 and 85537066073501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85537066073357) 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, 6109790433819 + ... + 6109790433832.

It is an arithmetic number, because the mean of its divisors is an integer number (24439161735304).

Almost surely, 2^{85537066073557} is an apocalyptic number.

It is an amenable number.

85537066073557 is a deficient number, since it is larger than the sum of its proper divisors (12219580867659).

85537066073557 is a wasteful number, since it uses less digits than its factorization.

85537066073557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12219580867658.

The product of its (nonzero) digits is 555660000, while the sum is 67.

Subtracting from 85537066073557 its reverse (75537066073558), we obtain a palindrome (9999999999999).

The spelling of 85537066073557 in words is "eighty-five trillion, five hundred thirty-seven billion, sixty-six million, seventy-three thousand, five hundred fifty-seven".