55106501643 has 12 divisors (see below), whose sum is σ = 79788257640. Its totient is φ = 36649985856.

The previous prime is 55106501561. The next prime is 55106501663. The reversal of 55106501643 is 34610560155.

55106501643 is a `hidden beast` number, since 5 + 5 + 1 + 0 + 6 + 5 + 0 + 1 + 643 = 666.

55106501643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55106501643 - 2¹⁰ = 55106500619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55106501598 and 55106501607.

It is not an unprimeable number, because it can be changed into a prime (55106501663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7302846 + ... + 7310387.

It is an arithmetic number, because the mean of its divisors is an integer number (6649021470).

Almost surely, 2^55106501643 is an apocalyptic number.

55106501643 is a deficient number, since it is larger than the sum of its proper divisors (24681755997).

55106501643 is a wasteful number, since it uses less digits than its factorization.

55106501643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14613658 (or 14613655 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 55106501643 in words is "fifty-five billion, one hundred six million, five hundred one thousand, six hundred forty-three".