206021344514654 has 16 divisors (see below), whose sum is σ = 334088666782800. Its totient is φ = 94951515821184.

The previous prime is 206021344514567. The next prime is 206021344514669. The reversal of 206021344514654 is 456415443120602.

It is a junction number, because it is equal to n+sod(n) for n = 206021344514599 and 206021344514608.

It is a congruent number.

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, 73265057099 + ... + 73265059910.

It is an arithmetic number, because the mean of its divisors is an integer number (20880541673925).

Almost surely, 2^{206021344514654} is an apocalyptic number.

206021344514654 is a deficient number, since it is larger than the sum of its proper divisors (128067322268146).

206021344514654 is a wasteful number, since it uses less digits than its factorization.

206021344514654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146530117067.

The product of its (nonzero) digits is 2764800, while the sum is 47.

The spelling of 206021344514654 in words is "two hundred six trillion, twenty-one billion, three hundred forty-four million, five hundred fourteen thousand, six hundred fifty-four".