51431432445 has 48 divisors (see below), whose sum is σ = 89418234672. Its totient is φ = 27347051520.

The previous prime is 51431432431. The next prime is 51431432471. The reversal of 51431432445 is 54423413415.

51431432445 is a `hidden beast` number, since 5 + 14 + 314 + 324 + 4 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 2352347001 + 49079085444 = 48501^2 + 221538^2 .

It is not a de Polignac number, because 51431432445 - 2¹⁰ = 51431431421 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31038057 + ... + 31039713.

It is an arithmetic number, because the mean of its divisors is an integer number (1862879889).

Almost surely, 2^51431432445 is an apocalyptic number.

It is an amenable number.

51431432445 is a deficient number, since it is larger than the sum of its proper divisors (37986802227).

51431432445 is a wasteful number, since it uses less digits than its factorization.

51431432445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3342 (or 3339 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The spelling of 51431432445 in words is "fifty-one billion, four hundred thirty-one million, four hundred thirty-two thousand, four hundred forty-five".