150561721516 has 12 divisors (see below), whose sum is σ = 265406247288. Its totient is φ = 74731365152.

The previous prime is 150561721511. The next prime is 150561721543. The reversal of 150561721516 is 615127165051.

It is a super-4 number, since 4×150561721516⁴ (a number of 46 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (150561721511) 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, 137373286 + ... + 137374381.

It is an arithmetic number, because the mean of its divisors is an integer number (22117187274).

Almost surely, 2^150561721516 is an apocalyptic number.

It is an amenable number.

150561721516 is a deficient number, since it is larger than the sum of its proper divisors (114844525772).

150561721516 is a wasteful number, since it uses less digits than its factorization.

150561721516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274747808 (or 274747806 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 40.

Adding to 150561721516 its reverse (615127165051), we get a palindrome (765688886567).

The spelling of 150561721516 in words is "one hundred fifty billion, five hundred sixty-one million, seven hundred twenty-one thousand, five hundred sixteen".