150621320686 has 4 divisors (see below), whose sum is σ = 225931981032. Its totient is φ = 75310660342.

The previous prime is 150621320639. The next prime is 150621320687. The reversal of 150621320686 is 686023126051.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150621320687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37655330170 + ... + 37655330173.

It is an arithmetic number, because the mean of its divisors is an integer number (56482995258).

Almost surely, 2^150621320686 is an apocalyptic number.

150621320686 is a deficient number, since it is larger than the sum of its proper divisors (75310660346).

150621320686 is an equidigital number, since it uses as much as digits as its factorization.

150621320686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75310660345.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 150621320686 in words is "one hundred fifty billion, six hundred twenty-one million, three hundred twenty thousand, six hundred eighty-six".