85397752357 has 4 divisors (see below), whose sum is σ = 87705799756. Its totient is φ = 83089704960.

The previous prime is 85397752351. The next prime is 85397752381. The reversal of 85397752357 is 75325779358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75325779358 = 2 ⋅37662889679.

It can be written as a sum of positive squares in 2 ways, for example, as 80038633921 + 5359118436 = 282911^2 + 73206^2 .

It is a cyclic number.

It is not a de Polignac number, because 85397752357 - 2⁷ = 85397752229 is a prime.

It is a super-2 number, since 2×85397752357² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85397752295 and 85397752304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85397752351) 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, 1154023644 + ... + 1154023717.

It is an arithmetic number, because the mean of its divisors is an integer number (21926449939).

Almost surely, 2^85397752357 is an apocalyptic number.

It is an amenable number.

85397752357 is a deficient number, since it is larger than the sum of its proper divisors (2308047399).

85397752357 is a wasteful number, since it uses less digits than its factorization.

85397752357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308047398.

The product of its digits is 55566000, while the sum is 61.

The spelling of 85397752357 in words is "eighty-five billion, three hundred ninety-seven million, seven hundred fifty-two thousand, three hundred fifty-seven".