51430266377 has 24 divisors (see below), whose sum is σ = 60325345800. Its totient is φ = 43716879360.

The previous prime is 51430266373. The next prime is 51430266383. The reversal of 51430266377 is 77366203415.

It can be written as a sum of positive squares in 4 ways, for example, as 160174336 + 51270092041 = 12656^2 + 226429^2 .

It is not a de Polignac number, because 51430266377 - 2² = 51430266373 is a prime.

It is a super-2 number, since 2×51430266377² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51430266373) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4820633 + ... + 4831289.

It is an arithmetic number, because the mean of its divisors is an integer number (2513556075).

Almost surely, 2^51430266377 is an apocalyptic number.

It is an amenable number.

51430266377 is a deficient number, since it is larger than the sum of its proper divisors (8895079423).

51430266377 is a wasteful number, since it uses less digits than its factorization.

51430266377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11481 (or 11474 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 44.

The spelling of 51430266377 in words is "fifty-one billion, four hundred thirty million, two hundred sixty-six thousand, three hundred seventy-seven".