149811223840 has 48 divisors (see below), whose sum is σ = 353952382392. Its totient is φ = 59920533504.

The previous prime is 149811223819. The next prime is 149811223847. The reversal of 149811223840 is 48322118941.

It can be written as a sum of positive squares in 4 ways, for example, as 70239840784 + 79571383056 = 265028^2 + 282084^2 .

It is not an unprimeable number, because it can be changed into a prime (149811223847) 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 7 ways as a sum of consecutive naturals, for example, 4231492 + ... + 4266748.

Almost surely, 2^149811223840 is an apocalyptic number.

149811223840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149811223840 is an abundant number, since it is smaller than the sum of its proper divisors (204141158552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149811223840 is a wasteful number, since it uses less digits than its factorization.

149811223840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61829 (or 61821 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The spelling of 149811223840 in words is "one hundred forty-nine billion, eight hundred eleven million, two hundred twenty-three thousand, eight hundred forty".