248956666491 has 8 divisors (see below), whose sum is σ = 357476239120. Its totient is φ = 153204102432.

The previous prime is 248956666489. The next prime is 248956666499. The reversal of 248956666491 is 194666659842.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 248956666491 - 2¹ = 248956666489 is a prime.

It is a super-2 number, since 2×248956666491² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (248956666499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3191752096 + ... + 3191752173.

It is an arithmetic number, because the mean of its divisors is an integer number (44684529890).

Almost surely, 2^248956666491 is an apocalyptic number.

248956666491 is a deficient number, since it is larger than the sum of its proper divisors (108519572629).

248956666491 is a wasteful number, since it uses less digits than its factorization.

248956666491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6383504285.

The product of its digits is 134369280, while the sum is 66.

The spelling of 248956666491 in words is "two hundred forty-eight billion, nine hundred fifty-six million, six hundred sixty-six thousand, four hundred ninety-one".