148909727857 has 4 divisors (see below), whose sum is σ = 162446975856. Its totient is φ = 135372479860.

The previous prime is 148909727849. The next prime is 148909727891. The reversal of 148909727857 is 758727909841.

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 148909727857 - 2³ = 148909727849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 148909727792 and 148909727801.

It is not an unprimeable number, because it can be changed into a prime (148909724857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6768623983 + ... + 6768624004.

It is an arithmetic number, because the mean of its divisors is an integer number (40611743964).

Almost surely, 2^148909727857 is an apocalyptic number.

It is an amenable number.

148909727857 is a deficient number, since it is larger than the sum of its proper divisors (13537247999).

148909727857 is a wasteful number, since it uses less digits than its factorization.

148909727857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13537247998.

The product of its (nonzero) digits is 71124480, while the sum is 67.

The spelling of 148909727857 in words is "one hundred forty-eight billion, nine hundred nine million, seven hundred twenty-seven thousand, eight hundred fifty-seven".