128418400950 has 96 divisors (see below), whose sum is σ = 368359923456. Its totient is φ = 28999109760.

The previous prime is 128418400931. The next prime is 128418400969. The reversal of 128418400950 is 59004814821.

It is an interprime number because it is at equal distance from previous prime (128418400931) and next prime (128418400969).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 649617 + ... + 823916.

It is an arithmetic number, because the mean of its divisors is an integer number (3837082536).

Almost surely, 2^128418400950 is an apocalyptic number.

128418400950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128418400950 is an abundant number, since it is smaller than the sum of its proper divisors (239941522506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128418400950 is a wasteful number, since it uses less digits than its factorization.

128418400950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473638 (or 1473633 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The spelling of 128418400950 in words is "one hundred twenty-eight billion, four hundred eighteen million, four hundred thousand, nine hundred fifty".