2656872471 has 32 divisors (see below), whose sum is σ = 3934660608. Its totient is φ = 1581164640.

The previous prime is 2656872443. The next prime is 2656872473. The reversal of 2656872471 is 1742786562.

2656872471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2656872471 - 2⁷ = 2656872343 is a prime.

It is a super-3 number, since 3×2656872471³ (a number of 29 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2656872471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656872473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 765486 + ... + 768948.

It is an arithmetic number, because the mean of its divisors is an integer number (122958144).

Almost surely, 2^2656872471 is an apocalyptic number.

2656872471 is a deficient number, since it is larger than the sum of its proper divisors (1277788137).

2656872471 is a wasteful number, since it uses less digits than its factorization.

2656872471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3891.

The product of its digits is 1128960, while the sum is 48.

The square root of 2656872471 is about 51544.8588221949. The cubic root of 2656872471 is about 1385.0227369664.

The spelling of 2656872471 in words is "two billion, six hundred fifty-six million, eight hundred seventy-two thousand, four hundred seventy-one".