85290751520 has 48 divisors (see below), whose sum is σ = 216999359640. Its totient is φ = 31491969024.

The previous prime is 85290751517. The next prime is 85290751543. The reversal of 85290751520 is 2515709258.

It can be written as a sum of positive squares in 4 ways, for example, as 33839809936 + 51450941584 = 183956^2 + 226828^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20500505 + ... + 20504664.

Almost surely, 2^85290751520 is an apocalyptic number.

85290751520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85290751520 is an abundant number, since it is smaller than the sum of its proper divisors (131708608120).

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

85290751520 is a wasteful number, since it uses less digits than its factorization.

85290751520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41005197 (or 41005189 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 44.

The spelling of 85290751520 in words is "eighty-five billion, two hundred ninety million, seven hundred fifty-one thousand, five hundred twenty".