85490405763839 has 8 divisors (see below), whose sum is σ = 85615407475920. Its totient is φ = 85365416511936.

The previous prime is 85490405763817. The next prime is 85490405763911. The reversal of 85490405763839 is 93836750409458.

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 85490405763839 - 2¹² = 85490405759743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85490405963839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10661672 + ... + 16871634.

It is an arithmetic number, because the mean of its divisors is an integer number (10701925934490).

Almost surely, 2^{85490405763839} is an apocalyptic number.

85490405763839 is a deficient number, since it is larger than the sum of its proper divisors (125001712081).

85490405763839 is a wasteful number, since it uses less digits than its factorization.

85490405763839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6230089.

The product of its (nonzero) digits is 783820800, while the sum is 71.

The spelling of 85490405763839 in words is "eighty-five trillion, four hundred ninety billion, four hundred five million, seven hundred sixty-three thousand, eight hundred thirty-nine".