156423243149 has 4 divisors (see below), whose sum is σ = 164656045440. Its totient is φ = 148190440860.

The previous prime is 156423243143. The next prime is 156423243167. The reversal of 156423243149 is 941342324651.

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.

It is a cyclic number.

It is not a de Polignac number, because 156423243149 - 2¹² = 156423239053 is a prime.

It is a super-5 number, since 5×156423243149⁵ (a number of 57 digits) contains 55555 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156423243143) 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, 4116401117 + ... + 4116401154.

It is an arithmetic number, because the mean of its divisors is an integer number (41164011360).

Almost surely, 2^156423243149 is an apocalyptic number.

156423243149 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

156423243149 is a deficient number, since it is larger than the sum of its proper divisors (8232802291).

156423243149 is an equidigital number, since it uses as much as digits as its factorization.

156423243149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8232802290.

The product of its digits is 622080, while the sum is 44.

The spelling of 156423243149 in words is "one hundred fifty-six billion, four hundred twenty-three million, two hundred forty-three thousand, one hundred forty-nine".