51224871969 has 12 divisors (see below), whose sum is σ = 74122912656. Its totient is φ = 34089254232.

The previous prime is 51224871959. The next prime is 51224871989. The reversal of 51224871969 is 96917842215.

It is a happy number.

51224871969 is a `hidden beast` number, since 51 + 22 + 487 + 1 + 96 + 9 = 666.

51224871969 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 51224871969 - 2⁹ = 51224871457 is a prime.

It is a super-2 number, since 2×51224871969² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51224871959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5049687 + ... + 5059820.

It is an arithmetic number, because the mean of its divisors is an integer number (6176909388).

Almost surely, 2^51224871969 is an apocalyptic number.

It is an amenable number.

51224871969 is a deficient number, since it is larger than the sum of its proper divisors (22898040687).

51224871969 is a wasteful number, since it uses less digits than its factorization.

51224871969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10110076 (or 10110073 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The spelling of 51224871969 in words is "fifty-one billion, two hundred twenty-four million, eight hundred seventy-one thousand, nine hundred sixty-nine".