128126077016 has 32 divisors (see below), whose sum is σ = 279209376000. Its totient is φ = 53980476576.

The previous prime is 128126076997. The next prime is 128126077019. The reversal of 128126077016 is 610770621821.

It is a super-2 number, since 2×128126077016² (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 (128126077019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19386236 + ... + 19392843.

It is an arithmetic number, because the mean of its divisors is an integer number (8725293000).

Almost surely, 2^128126077016 is an apocalyptic number.

It is an amenable number.

128126077016 is an abundant number, since it is smaller than the sum of its proper divisors (151083298984).

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

128126077016 is a wasteful number, since it uses less digits than its factorization.

128126077016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38779151 (or 38779147 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 41.

Adding to 128126077016 its reverse (610770621821), we get a palindrome (738896698837).

The spelling of 128126077016 in words is "one hundred twenty-eight billion, one hundred twenty-six million, seventy-seven thousand, sixteen".