128570689550 has 12 divisors (see below), whose sum is σ = 239141482656. Its totient is φ = 51428275800.

The previous prime is 128570689487. The next prime is 128570689553. The reversal of 128570689550 is 55986075821.

It is a super-2 number, since 2×128570689550² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128570689553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1285706846 + ... + 1285706945.

It is an arithmetic number, because the mean of its divisors is an integer number (19928456888).

Almost surely, 2^128570689550 is an apocalyptic number.

128570689550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128570689550 is a deficient number, since it is larger than the sum of its proper divisors (110570793106).

128570689550 is a wasteful number, since it uses less digits than its factorization.

128570689550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571413803 (or 2571413798 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 56.

The spelling of 128570689550 in words is "one hundred twenty-eight billion, five hundred seventy million, six hundred eighty-nine thousand, five hundred fifty".