85371973377 has 4 divisors (see below), whose sum is σ = 113829297840. Its totient is φ = 56914648916.

The previous prime is 85371973369. The next prime is 85371973441. The reversal of 85371973377 is 77337917358.

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 85371973377 - 2³ = 85371973369 is a prime.

It is a super-3 number, since 3×85371973377³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85371973377.

It is not an unprimeable number, because it can be changed into a prime (85371973177) 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, 14228662227 + ... + 14228662232.

It is an arithmetic number, because the mean of its divisors is an integer number (28457324460).

Almost surely, 2^85371973377 is an apocalyptic number.

It is an amenable number.

85371973377 is a deficient number, since it is larger than the sum of its proper divisors (28457324463).

85371973377 is a wasteful number, since it uses less digits than its factorization.

85371973377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28457324462.

The product of its digits is 23337720, while the sum is 60.

The spelling of 85371973377 in words is "eighty-five billion, three hundred seventy-one million, nine hundred seventy-three thousand, three hundred seventy-seven".