149782544721 has 24 divisors (see below), whose sum is σ = 223377163776. Its totient is φ = 96614219520.

The previous prime is 149782544701. The next prime is 149782544731. The reversal of 149782544721 is 127445287941.

It is a happy number.

149782544721 is a `hidden beast` number, since 1 + 4 + 9 + 78 + 2 + 544 + 7 + 21 = 666.

149782544721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149782544721 - 2¹⁰ = 149782543697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149782544701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1385596 + ... + 1489778.

It is an arithmetic number, because the mean of its divisors is an integer number (9307381824).

Almost surely, 2^149782544721 is an apocalyptic number.

It is an amenable number.

149782544721 is a deficient number, since it is larger than the sum of its proper divisors (73594619055).

149782544721 is a wasteful number, since it uses less digits than its factorization.

149782544721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109373 (or 109370 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The spelling of 149782544721 in words is "one hundred forty-nine billion, seven hundred eighty-two million, five hundred forty-four thousand, seven hundred twenty-one".