85750009815 has 16 divisors (see below), whose sum is σ = 137286724608. Its totient is φ = 45704435616.

The previous prime is 85750009799. The next prime is 85750009841. The reversal of 85750009815 is 51890005758.

It is not a de Polignac number, because 85750009815 - 2⁴ = 85750009799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1781899 + ... + 1829388.

It is an arithmetic number, because the mean of its divisors is an integer number (8580420288).

Almost surely, 2^85750009815 is an apocalyptic number.

85750009815 is a deficient number, since it is larger than the sum of its proper divisors (51536714793).

85750009815 is a wasteful number, since it uses less digits than its factorization.

85750009815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612878.

The product of its (nonzero) digits is 504000, while the sum is 48.

The spelling of 85750009815 in words is "eighty-five billion, seven hundred fifty million, nine thousand, eight hundred fifteen".