85061751139 has 4 divisors (see below), whose sum is σ = 87360717424. Its totient is φ = 82762784856.

The previous prime is 85061751127. The next prime is 85061751163. The reversal of 85061751139 is 93115716058.

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 85061751139 - 2⁷ = 85061751011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85061751199) 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, 1149483087 + ... + 1149483160.

It is an arithmetic number, because the mean of its divisors is an integer number (21840179356).

Almost surely, 2^85061751139 is an apocalyptic number.

85061751139 is a deficient number, since it is larger than the sum of its proper divisors (2298966285).

85061751139 is a wasteful number, since it uses less digits than its factorization.

85061751139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298966284.

The product of its (nonzero) digits is 226800, while the sum is 46.

The spelling of 85061751139 in words is "eighty-five billion, sixty-one million, seven hundred fifty-one thousand, one hundred thirty-nine".