85299120819 has 32 divisors (see below), whose sum is σ = 137957652480. Its totient is φ = 51658754400.

The previous prime is 85299120773. The next prime is 85299120839. The reversal of 85299120819 is 91802199258.

85299120819 is a `hidden beast` number, since 8 + 529 + 91 + 20 + 8 + 1 + 9 = 666.

It is not a de Polignac number, because 85299120819 - 2⁷ = 85299120691 is a prime.

It is a super-2 number, since 2×85299120819² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85299120839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 306174 + ... + 514140.

It is an arithmetic number, because the mean of its divisors is an integer number (4311176640).

Almost surely, 2^85299120819 is an apocalyptic number.

85299120819 is a deficient number, since it is larger than the sum of its proper divisors (52658531661).

85299120819 is a wasteful number, since it uses less digits than its factorization.

85299120819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209368 (or 209362 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 54.

The spelling of 85299120819 in words is "eighty-five billion, two hundred ninety-nine million, one hundred twenty thousand, eight hundred nineteen".