85428376739 has 16 divisors (see below), whose sum is σ = 89649548928. Its totient is φ = 81309652992.

The previous prime is 85428376729. The next prime is 85428376741. The reversal of 85428376739 is 93767382458.

It is a cyclic number.

It is not a de Polignac number, because 85428376739 - 2⁴ = 85428376723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85428376729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3732659 + ... + 3755475.

It is an arithmetic number, because the mean of its divisors is an integer number (5603096808).

Almost surely, 2^85428376739 is an apocalyptic number.

85428376739 is a deficient number, since it is larger than the sum of its proper divisors (4221172189).

85428376739 is a wasteful number, since it uses less digits than its factorization.

85428376739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25054.

The product of its digits is 60963840, while the sum is 62.

The spelling of 85428376739 in words is "eighty-five billion, four hundred twenty-eight million, three hundred seventy-six thousand, seven hundred thirty-nine".