149719561018 has 16 divisors (see below), whose sum is σ = 225779855616. Its totient is φ = 74460185280.

The previous prime is 149719561001. The next prime is 149719561021. The reversal of 149719561018 is 810165917941.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378930 + ... + 665602.

It is an arithmetic number, because the mean of its divisors is an integer number (14111240976).

Almost surely, 2^149719561018 is an apocalyptic number.

149719561018 is a deficient number, since it is larger than the sum of its proper divisors (76060294598).

149719561018 is a wasteful number, since it uses less digits than its factorization.

149719561018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288069.

The product of its (nonzero) digits is 544320, while the sum is 52.

The spelling of 149719561018 in words is "one hundred forty-nine billion, seven hundred nineteen million, five hundred sixty-one thousand, eighteen".