2154752300066 has 16 divisors (see below), whose sum is σ = 3422697539256. Its totient is φ = 1013869560576.

The previous prime is 2154752299967. The next prime is 2154752300081. The reversal of 2154752300066 is 6600032574512.

It can be written as a sum of positive squares in 4 ways, for example, as 2148818833225 + 5933466841 = 1465885^2 + 77029^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2154752299996 and 2154752300032.

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, 3843821 + ... + 4368576.

Almost surely, 2^{2154752300066} is an apocalyptic number.

2154752300066 is a deficient number, since it is larger than the sum of its proper divisors (1267945239190).

2154752300066 is a wasteful number, since it uses less digits than its factorization.

2154752300066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8220133.

The product of its (nonzero) digits is 302400, while the sum is 41.

Adding to 2154752300066 its reverse (6600032574512), we get a palindrome (8754784874578).

The spelling of 2154752300066 in words is "two trillion, one hundred fifty-four billion, seven hundred fifty-two million, three hundred thousand, sixty-six".