154200216656205 has 64 divisors (see below), whose sum is σ = 274957068672000. Its totient is φ = 81993252381696.

The previous prime is 154200216656191. The next prime is 154200216656221. The reversal of 154200216656205 is 502656612002451.

154200216656205 is a `hidden beast` number, since 1 + 5 + 4 + 2 + 0 + 0 + 2 + 16 + 6 + 5 + 620 + 5 = 666.

It is not a de Polignac number, because 154200216656205 - 2²³ = 154200208267597 is a prime.

It is a super-2 number, since 2×154200216656205² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 156566341 + ... + 157548149.

It is an arithmetic number, because the mean of its divisors is an integer number (4296204198000).

Almost surely, 2^{154200216656205} is an apocalyptic number.

154200216656205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

154200216656205 is a deficient number, since it is larger than the sum of its proper divisors (120756852015795).

154200216656205 is a wasteful number, since it uses less digits than its factorization.

154200216656205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985315 (or 985309 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

Adding to 154200216656205 its reverse (502656612002451), we get a palindrome (656856828658656).

The spelling of 154200216656205 in words is "one hundred fifty-four trillion, two hundred billion, two hundred sixteen million, six hundred fifty-six thousand, two hundred five".