128154237707 has 8 divisors (see below), whose sum is σ = 135752618736. Its totient is φ = 120562511872.

The previous prime is 128154237691. The next prime is 128154237709. The reversal of 128154237707 is 707732451821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128154237707 - 2⁴ = 128154237691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128154237709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1624118 + ... + 1701195.

It is an arithmetic number, because the mean of its divisors is an integer number (16969077342).

Almost surely, 2^128154237707 is an apocalyptic number.

128154237707 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

128154237707 is a deficient number, since it is larger than the sum of its proper divisors (7598381029).

128154237707 is a wasteful number, since it uses less digits than its factorization.

128154237707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327597.

The product of its (nonzero) digits is 658560, while the sum is 47.

The spelling of 128154237707 in words is "one hundred twenty-eight billion, one hundred fifty-four million, two hundred thirty-seven thousand, seven hundred seven".