85640355751 has 8 divisors (see below), whose sum is σ = 88408055808. Its totient is φ = 82872975000.

The previous prime is 85640355737. The next prime is 85640355781. The reversal of 85640355751 is 15755304658.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85640355751 - 2⁵ = 85640355719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85640355695 and 85640355704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85640355701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542346 + ... + 682216.

It is an arithmetic number, because the mean of its divisors is an integer number (11051006976).

Almost surely, 2^85640355751 is an apocalyptic number.

85640355751 is a deficient number, since it is larger than the sum of its proper divisors (2767700057).

85640355751 is a wasteful number, since it uses less digits than its factorization.

85640355751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159653.

The product of its (nonzero) digits is 2520000, while the sum is 49.

The spelling of 85640355751 in words is "eighty-five billion, six hundred forty million, three hundred fifty-five thousand, seven hundred fifty-one".