51431422037 has 2 divisors, whose sum is σ = 51431422038. Its totient is φ = 51431422036.

The previous prime is 51431422033. The next prime is 51431422067. The reversal of 51431422037 is 73022413415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28071662116 + 23359759921 = 167546^2 + 152839^2 .

It is a cyclic number.

It is not a de Polignac number, because 51431422037 - 2² = 51431422033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51431421994 and 51431422012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51431422033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25715711018 + 25715711019.

It is an arithmetic number, because the mean of its divisors is an integer number (25715711019).

Almost surely, 2^51431422037 is an apocalyptic number.

It is an amenable number.

51431422037 is a deficient number, since it is larger than the sum of its proper divisors (1).

51431422037 is an equidigital number, since it uses as much as digits as its factorization.

51431422037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 51431422037 in words is "fifty-one billion, four hundred thirty-one million, four hundred twenty-two thousand, thirty-seven".