89785417825081 has 4 divisors (see below), whose sum is σ = 97947728536464. Its totient is φ = 81623107113700.

The previous prime is 89785417824979. The next prime is 89785417825121. The reversal of 89785417825081 is 18052871458798.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89785417825081 is a prime.

It is a super-2 number, since 2×89785417825081² (a number of 29 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 = 89785417824995 and 89785417825013.

It is not an unprimeable number, because it can be changed into a prime (89785417825781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4081155355675 + ... + 4081155355696.

It is an arithmetic number, because the mean of its divisors is an integer number (24486932134116).

Almost surely, 2^{89785417825081} is an apocalyptic number.

It is an amenable number.

89785417825081 is a deficient number, since it is larger than the sum of its proper divisors (8162310711383).

89785417825081 is a wasteful number, since it uses less digits than its factorization.

89785417825081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8162310711382.

The product of its (nonzero) digits is 361267200, while the sum is 73.

The spelling of 89785417825081 in words is "eighty-nine trillion, seven hundred eighty-five billion, four hundred seventeen million, eight hundred twenty-five thousand, eighty-one".