85901043749 has 8 divisors (see below), whose sum is σ = 86176393560. Its totient is φ = 85625875456.

The previous prime is 85901043737. The next prime is 85901043779. The reversal of 85901043749 is 94734010958.

It can be written as a sum of positive squares in 4 ways, for example, as 1885122724 + 84015921025 = 43418^2 + 289855^2 .

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 85901043749 - 2⁴ = 85901043733 is a prime.

It is a super-2 number, since 2×85901043749² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85901043697 and 85901043706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85901043719) 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, 936467 + ... + 1024095.

It is an arithmetic number, because the mean of its divisors is an integer number (10772049195).

Almost surely, 2^85901043749 is an apocalyptic number.

It is an amenable number.

85901043749 is a deficient number, since it is larger than the sum of its proper divisors (275349811).

85901043749 is a wasteful number, since it uses less digits than its factorization.

85901043749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90759.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 85901043749 in words is "eighty-five billion, nine hundred one million, forty-three thousand, seven hundred forty-nine".