128571428155 has 16 divisors (see below), whose sum is σ = 155000944224. Its totient is φ = 102381180160.

The previous prime is 128571428143. The next prime is 128571428173. The reversal of 128571428155 is 551824175821.

It is not a de Polignac number, because 128571428155 - 2¹¹ = 128571426107 is a prime.

It is a super-2 number, since 2×128571428155² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128571428099 and 128571428108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1158495 + ... + 1264615.

It is an arithmetic number, because the mean of its divisors is an integer number (9687559014).

Almost surely, 2^128571428155 is an apocalyptic number.

128571428155 is a deficient number, since it is larger than the sum of its proper divisors (26429516069).

128571428155 is a wasteful number, since it uses less digits than its factorization.

128571428155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107246.

The product of its digits is 896000, while the sum is 49.

The spelling of 128571428155 in words is "one hundred twenty-eight billion, five hundred seventy-one million, four hundred twenty-eight thousand, one hundred fifty-five".