2156462461466 has 4 divisors (see below), whose sum is σ = 3234693692202. Its totient is φ = 1078231230732.

The previous prime is 2156462461427. The next prime is 2156462461469. The reversal of 2156462461466 is 6641642646512.

It is a happy number.

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., 1945341510025 + 211120951441 = 1394755^2 + 459479^2 .

It is not an unprimeable number, because it can be changed into a prime (2156462461469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539115615365 + ... + 539115615368.

Almost surely, 2^{2156462461466} is an apocalyptic number.

2156462461466 is a deficient number, since it is larger than the sum of its proper divisors (1078231230736).

2156462461466 is a wasteful number, since it uses less digits than its factorization.

2156462461466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078231230735.

The product of its digits is 9953280, while the sum is 53.

The spelling of 2156462461466 in words is "two trillion, one hundred fifty-six billion, four hundred sixty-two million, four hundred sixty-one thousand, four hundred sixty-six".