209702026054045 has 32 divisors (see below), whose sum is σ = 295414649941248. Its totient is φ = 139885355593728.

The previous prime is 209702026053991. The next prime is 209702026054061. The reversal of 209702026054045 is 540450620207902.

It is a cyclic number.

It is not a de Polignac number, because 209702026054045 - 2¹⁵ = 209702026021277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 209702026053986 and 209702026054004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6290244 + ... + 21423613.

It is an arithmetic number, because the mean of its divisors is an integer number (9231707810664).

Almost surely, 2^{209702026054045} is an apocalyptic number.

It is an amenable number.

209702026054045 is a deficient number, since it is larger than the sum of its proper divisors (85712623887203).

209702026054045 is a wasteful number, since it uses less digits than its factorization.

209702026054045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27719749.

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 209702026054045 in words is "two hundred nine trillion, seven hundred two billion, twenty-six million, fifty-four thousand, forty-five".