660226523951 has 4 divisors (see below), whose sum is σ = 660263781600. Its totient is φ = 660189266304.

The previous prime is 660226523947. The next prime is 660226523963. The reversal of 660226523951 is 159325622066.

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 660226523951 - 2² = 660226523947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 660226523896 and 660226523905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660226523981) 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, 18602231 + ... + 18637688.

It is an arithmetic number, because the mean of its divisors is an integer number (165065945400).

Almost surely, 2^660226523951 is an apocalyptic number.

660226523951 is a deficient number, since it is larger than the sum of its proper divisors (37257649).

660226523951 is a wasteful number, since it uses less digits than its factorization.

660226523951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37257648.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 660226523951 in words is "six hundred sixty billion, two hundred twenty-six million, five hundred twenty-three thousand, nine hundred fifty-one".