1406656644513 has 16 divisors (see below), whose sum is σ = 1928224636800. Its totient is φ = 911482298496.

The previous prime is 1406656644431. The next prime is 1406656644563. The reversal of 1406656644513 is 3154466566041.

It is not a de Polignac number, because 1406656644513 - 2³² = 1402361677217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1406656644563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6445188 + ... + 6659861.

It is an arithmetic number, because the mean of its divisors is an integer number (120514039800).

Almost surely, 2^{1406656644513} is an apocalyptic number.

It is an amenable number.

1406656644513 is a deficient number, since it is larger than the sum of its proper divisors (521567992287).

1406656644513 is a wasteful number, since it uses less digits than its factorization.

1406656644513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13106056.

The product of its (nonzero) digits is 6220800, while the sum is 51.

The spelling of 1406656644513 in words is "one trillion, four hundred six billion, six hundred fifty-six million, six hundred forty-four thousand, five hundred thirteen".