150221064646 has 16 divisors (see below), whose sum is σ = 230872275648. Its totient is φ = 73264350400.

The previous prime is 150221064641. The next prime is 150221064649. The reversal of 150221064646 is 646460122051.

It is a super-2 number, since 2×150221064646² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150221064641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253836 + ... + 604048.

It is an arithmetic number, because the mean of its divisors is an integer number (14429517228).

Almost surely, 2^150221064646 is an apocalyptic number.

150221064646 is a deficient number, since it is larger than the sum of its proper divisors (80651211002).

150221064646 is a wasteful number, since it uses less digits than its factorization.

150221064646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355487.

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 150221064646 its reverse (646460122051), we get a palindrome (796681186697).

The spelling of 150221064646 in words is "one hundred fifty billion, two hundred twenty-one million, sixty-four thousand, six hundred forty-six".