51478205637 has 16 divisors (see below), whose sum is σ = 70568467200. Its totient is φ = 33363175872.

The previous prime is 51478205599. The next prime is 51478205651. The reversal of 51478205637 is 73650287415.

It is not a de Polignac number, because 51478205637 - 2¹⁴ = 51478189253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51478205657) 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, 1204138 + ... + 1246155.

It is an arithmetic number, because the mean of its divisors is an integer number (4410529200).

Almost surely, 2^51478205637 is an apocalyptic number.

It is an amenable number.

51478205637 is a deficient number, since it is larger than the sum of its proper divisors (19090261563).

51478205637 is a wasteful number, since it uses less digits than its factorization.

51478205637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450492.

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 51478205637 in words is "fifty-one billion, four hundred seventy-eight million, two hundred five thousand, six hundred thirty-seven".