51024128769 has 16 divisors (see below), whose sum is σ = 75597066240. Its totient is φ = 34013491920.

The previous prime is 51024128723. The next prime is 51024128801. The reversal of 51024128769 is 96782142015.

51024128769 is a `hidden beast` number, since 510 + 2 + 4 + 128 + 7 + 6 + 9 = 666.

It is not a de Polignac number, because 51024128769 - 2⁷ = 51024128641 is a prime.

It is a super-2 number, since 2×51024128769² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51024128069) 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, 329199 + ... + 458715.

It is an arithmetic number, because the mean of its divisors is an integer number (4724816640).

Almost surely, 2^51024128769 is an apocalyptic number.

It is an amenable number.

51024128769 is a deficient number, since it is larger than the sum of its proper divisors (24572937471).

51024128769 is a wasteful number, since it uses less digits than its factorization.

51024128769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144117 (or 144111 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 51024128769 in words is "fifty-one billion, twenty-four million, one hundred twenty-eight thousand, seven hundred sixty-nine".