85958019959 has 4 divisors (see below), whose sum is σ = 98237737104. Its totient is φ = 73678302816.

The previous prime is 85958019923. The next prime is 85958019971. The reversal of 85958019959 is 95991085958.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85958019959 - 2⁸ = 85958019703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85958019559) 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, 6139858562 + ... + 6139858575.

It is an arithmetic number, because the mean of its divisors is an integer number (24559434276).

Almost surely, 2^85958019959 is an apocalyptic number.

85958019959 is a deficient number, since it is larger than the sum of its proper divisors (12279717145).

85958019959 is a wasteful number, since it uses less digits than its factorization.

85958019959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12279717144.

The product of its (nonzero) digits is 52488000, while the sum is 68.

The spelling of 85958019959 in words is "eighty-five billion, nine hundred fifty-eight million, nineteen thousand, nine hundred fifty-nine".