495642657403 has 4 divisors (see below), whose sum is σ = 495766479208. Its totient is φ = 495518835600.

The previous prime is 495642657383. The next prime is 495642657443. The reversal of 495642657403 is 304756246594.

It is a happy number.

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 495642657403 - 2⁹ = 495642656891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (495642657443) 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, 61904898 + ... + 61912903.

It is an arithmetic number, because the mean of its divisors is an integer number (123941619802).

Almost surely, 2^495642657403 is an apocalyptic number.

495642657403 is a deficient number, since it is larger than the sum of its proper divisors (123821805).

495642657403 is a wasteful number, since it uses less digits than its factorization.

495642657403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123821804.

The product of its (nonzero) digits is 21772800, while the sum is 55.

The spelling of 495642657403 in words is "four hundred ninety-five billion, six hundred forty-two million, six hundred fifty-seven thousand, four hundred three".