128164196454 has 36 divisors (see below), whose sum is σ = 298192208364. Its totient is φ = 36616588008.

The previous prime is 128164196449. The next prime is 128164196467. The reversal of 128164196454 is 454691461821.

It is a super-2 number, since 2×128164196454² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128164196397 and 128164196406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6127987 + ... + 6148865.

It is an arithmetic number, because the mean of its divisors is an integer number (8283116899).

Almost surely, 2^128164196454 is an apocalyptic number.

128164196454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

128164196454 is an abundant number, since it is smaller than the sum of its proper divisors (170028011910).

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

128164196454 is an frugal number, since it uses more digits than its factorization.

128164196454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41777 (or 20891 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 51.

The spelling of 128164196454 in words is "one hundred twenty-eight billion, one hundred sixty-four million, one hundred ninety-six thousand, four hundred fifty-four".