148643870728665 has 32 divisors (see below), whose sum is σ = 257555688405120. Its totient is φ = 72769702404096.

The previous prime is 148643870728651. The next prime is 148643870728729. The reversal of 148643870728665 is 566827078346841.

It is a happy number.

It is not a de Polignac number, because 148643870728665 - 2⁷ = 148643870728537 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2129228392 + ... + 2129298201.

It is an arithmetic number, because the mean of its divisors is an integer number (8048615262660).

Almost surely, 2^{148643870728665} is an apocalyptic number.

148643870728665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

148643870728665 is a deficient number, since it is larger than the sum of its proper divisors (108911817676455).

148643870728665 is a wasteful number, since it uses less digits than its factorization.

148643870728665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4258526793.

The product of its (nonzero) digits is 2601123840, while the sum is 75.

The spelling of 148643870728665 in words is "one hundred forty-eight trillion, six hundred forty-three billion, eight hundred seventy million, seven hundred twenty-eight thousand, six hundred sixty-five".