669340699293 has 16 divisors (see below), whose sum is σ = 1021595486720. Its totient is φ = 381862491696.

The previous prime is 669340699277. The next prime is 669340699309. The reversal of 669340699293 is 392996043966.

It is an interprime number because it is at equal distance from previous prime (669340699277) and next prime (669340699309).

It is not a de Polignac number, because 669340699293 - 2⁴ = 669340699277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669340699393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25732855 + ... + 25758852.

It is an arithmetic number, because the mean of its divisors is an integer number (63849717920).

Almost surely, 2^669340699293 is an apocalyptic number.

It is an amenable number.

669340699293 is a deficient number, since it is larger than the sum of its proper divisors (352254787427).

669340699293 is a wasteful number, since it uses less digits than its factorization.

669340699293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51492336.

The product of its (nonzero) digits is 102036672, while the sum is 66.

The spelling of 669340699293 in words is "six hundred sixty-nine billion, three hundred forty million, six hundred ninety-nine thousand, two hundred ninety-three".