55172906128 has 10 divisors (see below), whose sum is σ = 106897505654. Its totient is φ = 27586453056.

The previous prime is 55172906101. The next prime is 55172906167. The reversal of 55172906128 is 82160927155.

55172906128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 39765145744 + 15407760384 = 199412^2 + 124128^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1724153301 + ... + 1724153332.

Almost surely, 2^55172906128 is an apocalyptic number.

It is an amenable number.

55172906128 is a deficient number, since it is larger than the sum of its proper divisors (51724599526).

55172906128 is a wasteful number, since it uses less digits than its factorization.

55172906128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448306641 (or 3448306635 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 55172906128 in words is "fifty-five billion, one hundred seventy-two million, nine hundred six thousand, one hundred twenty-eight".