149669744831 has 4 divisors (see below), whose sum is σ = 149692675200. Its totient is φ = 149646814464.

The previous prime is 149669744827. The next prime is 149669744849. The reversal of 149669744831 is 138447966941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138447966941 = 757 ⋅182890313.

It is a cyclic number.

It is not a de Polignac number, because 149669744831 - 2² = 149669744827 is a prime.

It is a super-2 number, since 2×149669744831² (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 (149669744891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11455391 + ... + 11468448.

It is an arithmetic number, because the mean of its divisors is an integer number (37423168800).

Almost surely, 2^149669744831 is an apocalyptic number.

149669744831 is a deficient number, since it is larger than the sum of its proper divisors (22930369).

149669744831 is an equidigital number, since it uses as much as digits as its factorization.

149669744831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22930368.

The product of its digits is 31352832, while the sum is 62.

The spelling of 149669744831 in words is "one hundred forty-nine billion, six hundred sixty-nine million, seven hundred forty-four thousand, eight hundred thirty-one".