253533914666 has 12 divisors (see below), whose sum is σ = 383888337378. Its totient is φ = 125582208072.

The previous prime is 253533914657. The next prime is 253533914677. The reversal of 253533914666 is 666419335352.

It can be written as a sum of positive squares in only one way, i.e., 192176147641 + 61357767025 = 438379^2 + 247705^2 .

It is a super-3 number, since 3×253533914666³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5513261 + ... + 5559056.

Almost surely, 2^253533914666 is an apocalyptic number.

253533914666 is a deficient number, since it is larger than the sum of its proper divisors (130354422712).

253533914666 is a wasteful number, since it uses less digits than its factorization.

253533914666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11072533 (or 11072426 counting only the distinct ones).

The product of its digits is 10497600, while the sum is 53.

The spelling of 253533914666 in words is "two hundred fifty-three billion, five hundred thirty-three million, nine hundred fourteen thousand, six hundred sixty-six".