85940136840000 has 280 divisors, whose sum is σ = 284159852364960. Its totient is φ = 22915619072000.

The previous prime is 85940136839959. The next prime is 85940136840011. The reversal of 85940136840000 is 4863104958.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2601943486 + ... + 2601976514.

Almost surely, 2^{85940136840000} is an apocalyptic number.

85940136840000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85940136840000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142079926182480).

85940136840000 is an abundant number, since it is smaller than the sum of its proper divisors (198219715524960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85940136840000 is a wasteful number, since it uses less digits than its factorization.

85940136840000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54747 (or 54722 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

Adding to 85940136840000 its reverse (4863104958), we get a palindrome (85944999944958).

The spelling of 85940136840000 in words is "eighty-five trillion, nine hundred forty billion, one hundred thirty-six million, eight hundred forty thousand".