128487119401 has 9 divisors (see below), whose sum is σ = 128983329111. Its totient is φ = 127992815472.

The previous prime is 128487119381. The next prime is 128487119419. The reversal of 128487119401 is 104911784821.

The square root of 128487119401 is 358451.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 124048362025 + 4438757376 = 352205^2 + 66624^2 .

It is not a de Polignac number, because 128487119401 - 2¹³ = 128487111209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128487117401) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 124381981 + ... + 124383013.

Almost surely, 2^128487119401 is an apocalyptic number.

128487119401 is the 358451-st square number.

128487119401 is the 179226-th centered octagonal number.

It is an amenable number.

128487119401 is a deficient number, since it is larger than the sum of its proper divisors (496209710).

128487119401 is an frugal number, since it uses more digits than its factorization.

128487119401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2760 (or 1380 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 46.

The spelling of 128487119401 in words is "one hundred twenty-eight billion, four hundred eighty-seven million, one hundred nineteen thousand, four hundred one".