2656533454 has 4 divisors (see below), whose sum is σ = 3984800184. Its totient is φ = 1328266726.

The previous prime is 2656533443. The next prime is 2656533479. The reversal of 2656533454 is 4543356562.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4543356562 = 2 ⋅2271678281.

It is a self number, because there is not a number n which added to its sum of digits gives 2656533454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664133362 + ... + 664133365.

It is an arithmetic number, because the mean of its divisors is an integer number (996200046).

Almost surely, 2^2656533454 is an apocalyptic number.

2656533454 is a deficient number, since it is larger than the sum of its proper divisors (1328266730).

2656533454 is a wasteful number, since it uses less digits than its factorization.

2656533454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328266729.

The product of its digits is 1296000, while the sum is 43.

The square root of 2656533454 is about 51541.5701545849. The cubic root of 2656533454 is about 1384.9638248142.

The spelling of 2656533454 in words is "two billion, six hundred fifty-six million, five hundred thirty-three thousand, four hundred fifty-four".