150323115661 has 4 divisors (see below), whose sum is σ = 153521479872. Its totient is φ = 147124751452.

The previous prime is 150323115641. The next prime is 150323115703. The reversal of 150323115661 is 166511323051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166511323051 = 302513 ⋅550427.

It is a cyclic number.

It is not a de Polignac number, because 150323115661 - 2⁹ = 150323115149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150323115611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1599182035 + ... + 1599182128.

It is an arithmetic number, because the mean of its divisors is an integer number (38380369968).

Almost surely, 2^150323115661 is an apocalyptic number.

It is an amenable number.

150323115661 is a deficient number, since it is larger than the sum of its proper divisors (3198364211).

150323115661 is an equidigital number, since it uses as much as digits as its factorization.

150323115661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3198364210.

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 150323115661 in words is "one hundred fifty billion, three hundred twenty-three million, one hundred fifteen thousand, six hundred sixty-one".