669849397151 has 48 divisors (see below), whose sum is σ = 809935526400. Its totient is φ = 551494500480.

The previous prime is 669849397141. The next prime is 669849397153. The reversal of 669849397151 is 151793948966.

It is a de Polignac number, because none of the positive numbers 2^k-669849397151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669849397153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4574195 + ... + 4718363.

It is an arithmetic number, because the mean of its divisors is an integer number (16873656800).

Almost surely, 2^669849397151 is an apocalyptic number.

669849397151 is a deficient number, since it is larger than the sum of its proper divisors (140086129249).

669849397151 is a wasteful number, since it uses less digits than its factorization.

669849397151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144300 (or 144289 counting only the distinct ones).

The product of its digits is 88179840, while the sum is 68.

The spelling of 669849397151 in words is "six hundred sixty-nine billion, eight hundred forty-nine million, three hundred ninety-seven thousand, one hundred fifty-one".