146509858081 has 4 divisors (see below), whose sum is σ = 149627089152. Its totient is φ = 143392627012.

The previous prime is 146509858073. The next prime is 146509858127. The reversal of 146509858081 is 180858905641.

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 not a de Polignac number, because 146509858081 - 2³ = 146509858073 is a prime.

It is a super-2 number, since 2×146509858081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146509858051) 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, 1558615465 + ... + 1558615558.

It is an arithmetic number, because the mean of its divisors is an integer number (37406772288).

Almost surely, 2^146509858081 is an apocalyptic number.

It is an amenable number.

146509858081 is a deficient number, since it is larger than the sum of its proper divisors (3117231071).

146509858081 is an equidigital number, since it uses as much as digits as its factorization.

146509858081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117231070.

The product of its (nonzero) digits is 2764800, while the sum is 55.

The spelling of 146509858081 in words is "one hundred forty-six billion, five hundred nine million, eight hundred fifty-eight thousand, eighty-one".