128147406534 has 64 divisors (see below), whose sum is σ = 328613575680. Its totient is φ = 36258062400.

The previous prime is 128147406493. The next prime is 128147406539. The reversal of 128147406534 is 435604741821.

128147406534 is a `hidden beast` number, since 12 + 81 + 474 + 0 + 65 + 34 = 666.

It is a super-3 number, since 3×128147406534³ (a number of 34 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 128147406534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128147406539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1606767 + ... + 1684634.

It is an arithmetic number, because the mean of its divisors is an integer number (5134587120).

Almost surely, 2^128147406534 is an apocalyptic number.

128147406534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

128147406534 is an abundant number, since it is smaller than the sum of its proper divisors (200466169146).

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

128147406534 is a wasteful number, since it uses less digits than its factorization.

128147406534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291522 (or 3291516 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 128147406534 in words is "one hundred twenty-eight billion, one hundred forty-seven million, four hundred six thousand, five hundred thirty-four".