55729130646 has 32 divisors (see below), whose sum is σ = 127909444608. Its totient is φ = 15856536960.

The previous prime is 55729130627. The next prime is 55729130651. The reversal of 55729130646 is 64603192755.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 55729130595 and 55729130604.

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, 2742750 + ... + 2762993.

It is an arithmetic number, because the mean of its divisors is an integer number (3997170144).

Almost surely, 2^55729130646 is an apocalyptic number.

55729130646 is an abundant number, since it is smaller than the sum of its proper divisors (72180313962).

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

55729130646 is a wasteful number, since it uses less digits than its factorization.

55729130646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505996.

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 55729130646 in words is "fifty-five billion, seven hundred twenty-nine million, one hundred thirty thousand, six hundred forty-six".