55129929458 has 6 divisors (see below), whose sum is σ = 82695392271. Its totient is φ = 27564798702.

The previous prime is 55129929457. The next prime is 55129929473. The reversal of 55129929458 is 85492992155.

It can be written as a sum of positive squares in only one way, i.e., 27564964729 + 27564964729 = 166027^2 + 166027^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=166027.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55129929397 and 55129929406.

It is not an unprimeable number, because it can be changed into a prime (55129929457) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 249041 + ... + 415067.

Almost surely, 2^55129929458 is an apocalyptic number.

55129929458 is a deficient number, since it is larger than the sum of its proper divisors (27565462813).

55129929458 is an frugal number, since it uses more digits than its factorization.

55129929458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332056 (or 166029 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 59.

The spelling of 55129929458 in words is "fifty-five billion, one hundred twenty-nine million, nine hundred twenty-nine thousand, four hundred fifty-eight".