128155857048 has 64 divisors (see below), whose sum is σ = 356696524800. Its totient is φ = 42633655200.

The previous prime is 128155857023. The next prime is 128155857083. The reversal of 128155857048 is 840758551821.

It is a happy number.

128155857048 is a `hidden beast` number, since 1 + 2 + 8 + 15 + 58 + 570 + 4 + 8 = 666.

It is a super-2 number, since 2×128155857048² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 128155856985 and 128155857003.

It is a congruent number.

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, 481128 + ... + 698423.

It is an arithmetic number, because the mean of its divisors is an integer number (5573383200).

Almost surely, 2^128155857048 is an apocalyptic number.

128155857048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128155857048 is an abundant number, since it is smaller than the sum of its proper divisors (228540667752).

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

128155857048 is a wasteful number, since it uses less digits than its factorization.

128155857048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180069 (or 1180059 counting only the distinct ones).

The product of its (nonzero) digits is 3584000, while the sum is 54.

The spelling of 128155857048 in words is "one hundred twenty-eight billion, one hundred fifty-five million, eight hundred fifty-seven thousand, forty-eight".