656265022403 has 4 divisors (see below), whose sum is σ = 690805286760. Its totient is φ = 621724758048.

The previous prime is 656265022363. The next prime is 656265022471. The reversal of 656265022403 is 304220562656.

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 656265022403 - 2¹² = 656265018307 is a prime.

It is a super-2 number, since 2×656265022403² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656265022003) 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 3 ways as a sum of consecutive naturals, for example, 17270132150 + ... + 17270132187.

It is an arithmetic number, because the mean of its divisors is an integer number (172701321690).

Almost surely, 2^656265022403 is an apocalyptic number.

656265022403 is a deficient number, since it is larger than the sum of its proper divisors (34540264357).

656265022403 is a wasteful number, since it uses less digits than its factorization.

656265022403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34540264356.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 656265022403 in words is "six hundred fifty-six billion, two hundred sixty-five million, twenty-two thousand, four hundred three".