150621320615 has 4 divisors (see below), whose sum is σ = 180745584744. Its totient is φ = 120497056488.

The previous prime is 150621320609. The next prime is 150621320639. The reversal of 150621320615 is 516023126051.

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

It is a cyclic number.

It is not a de Polignac number, because 150621320615 - 2⁴ = 150621320599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15062132057 + ... + 15062132066.

It is an arithmetic number, because the mean of its divisors is an integer number (45186396186).

Almost surely, 2^150621320615 is an apocalyptic number.

150621320615 is a deficient number, since it is larger than the sum of its proper divisors (30124264129).

150621320615 is an equidigital number, since it uses as much as digits as its factorization.

150621320615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30124264128.

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 150621320615 its reverse (516023126051), we get a palindrome (666644446666).

The spelling of 150621320615 in words is "one hundred fifty billion, six hundred twenty-one million, three hundred twenty thousand, six hundred fifteen".