495129517881 has 16 divisors (see below), whose sum is σ = 661465651200. Its totient is φ = 329440185360.

The previous prime is 495129517873. The next prime is 495129517921. The reversal of 495129517881 is 188715921594.

It is not a de Polignac number, because 495129517881 - 2³ = 495129517873 is a prime.

It is a super-2 number, since 2×495129517881² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (495129517381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6486966 + ... + 6562848.

It is an arithmetic number, because the mean of its divisors is an integer number (41341603200).

Almost surely, 2^495129517881 is an apocalyptic number.

It is an amenable number.

495129517881 is a deficient number, since it is larger than the sum of its proper divisors (166336133319).

495129517881 is a wasteful number, since it uses less digits than its factorization.

495129517881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80116.

The product of its digits is 7257600, while the sum is 60.

The spelling of 495129517881 in words is "four hundred ninety-five billion, one hundred twenty-nine million, five hundred seventeen thousand, eight hundred eighty-one".