512657241421 has 16 divisors (see below), whose sum is σ = 554153664064. Its totient is φ = 471455956224.

The previous prime is 512657241373. The next prime is 512657241449. The reversal of 512657241421 is 124142756215.

It is a cyclic number.

It is not a de Polignac number, because 512657241421 - 2²⁵ = 512623686989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512657241451) 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, 24186190 + ... + 24207376.

It is an arithmetic number, because the mean of its divisors is an integer number (34634604004).

Almost surely, 2^512657241421 is an apocalyptic number.

It is an amenable number.

512657241421 is a deficient number, since it is larger than the sum of its proper divisors (41496422643).

512657241421 is a wasteful number, since it uses less digits than its factorization.

512657241421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28060.

The product of its digits is 134400, while the sum is 40.

Adding to 512657241421 its reverse (124142756215), we get a palindrome (636799997636).

The spelling of 512657241421 in words is "five hundred twelve billion, six hundred fifty-seven million, two hundred forty-one thousand, four hundred twenty-one".