85169553390 has 48 divisors (see below), whose sum is σ = 222139464768. Its totient is φ = 22640227008.

The previous prime is 85169553389. The next prime is 85169553397. The reversal of 85169553390 is 9335596158.

It is a happy number.

85169553390 is a `hidden beast` number, since 8 + 5 + 16 + 9 + 5 + 533 + 90 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85169553397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1464102 + ... + 1521161.

It is an arithmetic number, because the mean of its divisors is an integer number (4627905516).

Almost surely, 2^85169553390 is an apocalyptic number.

85169553390 is an abundant number, since it is smaller than the sum of its proper divisors (136969911378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85169553390 is a wasteful number, since it uses less digits than its factorization.

85169553390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985593 (or 2985590 counting only the distinct ones).

The product of its (nonzero) digits is 4374000, while the sum is 54.

The spelling of 85169553390 in words is "eighty-five billion, one hundred sixty-nine million, five hundred fifty-three thousand, three hundred ninety".