150621320661 has 16 divisors (see below), whose sum is σ = 229560268800. Its totient is φ = 86053551408.

The previous prime is 150621320639. The next prime is 150621320687. The reversal of 150621320661 is 166023126051.

It is not a de Polignac number, because 150621320661 - 2¹⁸ = 150621058517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150621320761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539481 + ... + 769598.

It is an arithmetic number, because the mean of its divisors is an integer number (14347516800).

Almost surely, 2^150621320661 is an apocalyptic number.

It is an amenable number.

150621320661 is a deficient number, since it is larger than the sum of its proper divisors (78938948139).

150621320661 is a wasteful number, since it uses less digits than its factorization.

150621320661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314568.

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 150621320661 in words is "one hundred fifty billion, six hundred twenty-one million, three hundred twenty thousand, six hundred sixty-one".