51407503329 has 128 divisors (see below), whose sum is σ = 90574848000. Its totient is φ = 25735207680.

The previous prime is 51407503321. The next prime is 51407503331. The reversal of 51407503329 is 92330570415.

It is a happy number.

It is not a de Polignac number, because 51407503329 - 2³ = 51407503321 is a prime.

It is a super-2 number, since 2×51407503329² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (51407503321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 21977242 + ... + 21979580.

It is an arithmetic number, because the mean of its divisors is an integer number (707616000).

Almost surely, 2^51407503329 is an apocalyptic number.

It is an amenable number.

51407503329 is a deficient number, since it is larger than the sum of its proper divisors (39167344671).

51407503329 is a wasteful number, since it uses less digits than its factorization.

51407503329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460 (or 2446 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 39.

The spelling of 51407503329 in words is "fifty-one billion, four hundred seven million, five hundred three thousand, three hundred twenty-nine".