51432664213 has 16 divisors (see below), whose sum is σ = 62319040000. Its totient is φ = 41464388592.

The previous prime is 51432664207. The next prime is 51432664219. The reversal of 51432664213 is 31246623415.

51432664213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51432664207) and next prime (51432664219).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51432664213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51432664219) 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, 1372563 + ... + 1409536.

It is an arithmetic number, because the mean of its divisors is an integer number (3894940000).

Almost surely, 2^51432664213 is an apocalyptic number.

It is an amenable number.

51432664213 is a deficient number, since it is larger than the sum of its proper divisors (10886375787).

51432664213 is a wasteful number, since it uses less digits than its factorization.

51432664213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782264.

The product of its digits is 103680, while the sum is 37.

The spelling of 51432664213 in words is "fifty-one billion, four hundred thirty-two million, six hundred sixty-four thousand, two hundred thirteen".