2657421016 has 16 divisors (see below), whose sum is σ = 5244910200. Its totient is φ = 1258778304.

The previous prime is 2657420951. The next prime is 2657421017. The reversal of 2657421016 is 6101247562.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2657421017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8741365 + ... + 8741668.

Almost surely, 2^2657421016 is an apocalyptic number.

It is an amenable number.

2657421016 is a deficient number, since it is larger than the sum of its proper divisors (2587489184).

2657421016 is a wasteful number, since it uses less digits than its factorization.

2657421016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17483058 (or 17483054 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 2657421016 is about 51550.1795923157. The cubic root of 2657421016 is about 1385.1180489074.

Adding to 2657421016 its reverse (6101247562), we get a palindrome (8758668578).

The spelling of 2657421016 in words is "two billion, six hundred fifty-seven million, four hundred twenty-one thousand, sixteen".