669023671553 has 8 divisors (see below), whose sum is σ = 715780288320. Its totient is φ = 623421539280.

The previous prime is 669023671549. The next prime is 669023671559. The reversal of 669023671553 is 355176320966.

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

It is a cyclic number.

It is not a de Polignac number, because 669023671553 - 2² = 669023671549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 669023671495 and 669023671504.

It is not an unprimeable number, because it can be changed into a prime (669023671559) 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, 288619925 + ... + 288622242.

It is an arithmetic number, because the mean of its divisors is an integer number (89472536040).

Almost surely, 2^669023671553 is an apocalyptic number.

It is an amenable number.

669023671553 is a deficient number, since it is larger than the sum of its proper divisors (46756616767).

669023671553 is a wasteful number, since it uses less digits than its factorization.

669023671553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577242247.

The product of its (nonzero) digits is 6123600, while the sum is 53.

The spelling of 669023671553 in words is "six hundred sixty-nine billion, twenty-three million, six hundred seventy-one thousand, five hundred fifty-three".