85211134690 has 64 divisors (see below), whose sum is σ = 168836400000. Its totient is φ = 30706708480.

The previous prime is 85211134651. The next prime is 85211134819. The reversal of 85211134690 is 9643111258.

It is a super-2 number, since 2×85211134690² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7353321 + ... + 7364899.

It is an arithmetic number, because the mean of its divisors is an integer number (2638068750).

Almost surely, 2^85211134690 is an apocalyptic number.

85211134690 is a deficient number, since it is larger than the sum of its proper divisors (83625265310).

85211134690 is a wasteful number, since it uses less digits than its factorization.

85211134690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12195.

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 85211134690 in words is "eighty-five billion, two hundred eleven million, one hundred thirty-four thousand, six hundred ninety".