2154006022466 has 4 divisors (see below), whose sum is σ = 3231009033702. Its totient is φ = 1077003011232.

The previous prime is 2154006022463. The next prime is 2154006022507. The reversal of 2154006022466 is 6642206004512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1735424196025 + 418581826441 = 1317355^2 + 646979^2 .

It is not an unprimeable number, because it can be changed into a prime (2154006022463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538501505615 + ... + 538501505618.

Almost surely, 2^{2154006022466} is an apocalyptic number.

2154006022466 is a deficient number, since it is larger than the sum of its proper divisors (1077003011236).

2154006022466 is a wasteful number, since it uses less digits than its factorization.

2154006022466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077003011235.

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 2154006022466 in words is "two trillion, one hundred fifty-four billion, six million, twenty-two thousand, four hundred sixty-six".