495599009951 has 4 divisors (see below), whose sum is σ = 495606212304. Its totient is φ = 495591807600.

The previous prime is 495599009903. The next prime is 495599009959. The reversal of 495599009951 is 159900995594.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 495599009951 - 2¹⁸ = 495598747807 is a prime.

It is a super-2 number, since 2×495599009951² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495599009959) 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, 3496955 + ... + 3635916.

It is an arithmetic number, because the mean of its divisors is an integer number (123901553076).

Almost surely, 2^495599009951 is an apocalyptic number.

495599009951 is a deficient number, since it is larger than the sum of its proper divisors (7202353).

495599009951 is an equidigital number, since it uses as much as digits as its factorization.

495599009951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7202352.

The product of its (nonzero) digits is 29524500, while the sum is 65.

The spelling of 495599009951 in words is "four hundred ninety-five billion, five hundred ninety-nine million, nine thousand, nine hundred fifty-one".