149000686669 has 4 divisors (see below), whose sum is σ = 149126852700. Its totient is φ = 148874520640.

The previous prime is 149000686633. The next prime is 149000686697. The reversal of 149000686669 is 966686000941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 966686000941 = 191 ⋅5061183251.

It can be written as a sum of positive squares in 2 ways, for example, as 127284832900 + 21715853769 = 356770^2 + 147363^2 .

It is a cyclic number.

It is not a de Polignac number, because 149000686669 - 2¹¹ = 149000684621 is a prime.

It is a super-2 number, since 2×149000686669² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149000686069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63081244 + ... + 63083605.

It is an arithmetic number, because the mean of its divisors is an integer number (37281713175).

Almost surely, 2^149000686669 is an apocalyptic number.

It is an amenable number.

149000686669 is a deficient number, since it is larger than the sum of its proper divisors (126166031).

149000686669 is a wasteful number, since it uses less digits than its factorization.

149000686669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126166030.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 149000686669 in words is "one hundred forty-nine billion, six hundred eighty-six thousand, six hundred sixty-nine".