128418020519 has 8 divisors (see below), whose sum is σ = 135979719408. Its totient is φ = 120857176960.

The previous prime is 128418020513. The next prime is 128418020527. The reversal of 128418020519 is 915020814821.

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 128418020519 - 2⁴ = 128418020503 is a prime.

It is a super-2 number, since 2×128418020519² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128418020513) 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, 109244 + ... + 518430.

It is an arithmetic number, because the mean of its divisors is an integer number (16997464926).

Almost surely, 2^128418020519 is an apocalyptic number.

128418020519 is a deficient number, since it is larger than the sum of its proper divisors (7561698889).

128418020519 is a wasteful number, since it uses less digits than its factorization.

128418020519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427665.

The product of its (nonzero) digits is 46080, while the sum is 41.

The spelling of 128418020519 in words is "one hundred twenty-eight billion, four hundred eighteen million, twenty thousand, five hundred nineteen".