154200820128 has 48 divisors (see below), whose sum is σ = 405233720640. Its totient is φ = 51342296576.

The previous prime is 154200820057. The next prime is 154200820187. The reversal of 154200820128 is 821028002451.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 820293 + ... + 990596.

It is an arithmetic number, because the mean of its divisors is an integer number (8442369180).

Almost surely, 2^154200820128 is an apocalyptic number.

It is an amenable number.

154200820128 is an abundant number, since it is smaller than the sum of its proper divisors (251032900512).

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

154200820128 is a wasteful number, since it uses less digits than its factorization.

154200820128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811789 (or 1811781 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

Adding to 154200820128 its reverse (821028002451), we get a palindrome (975228822579).

The spelling of 154200820128 in words is "one hundred fifty-four billion, two hundred million, eight hundred twenty thousand, one hundred twenty-eight".