51436454401 has 2 divisors, whose sum is σ = 51436454402. Its totient is φ = 51436454400.

The previous prime is 51436454387. The next prime is 51436454417. The reversal of 51436454401 is 10445463415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48118809600 + 3317644801 = 219360^2 + 57599^2 .

It is a cyclic number.

It is not a de Polignac number, because 51436454401 - 2¹³ = 51436446209 is a prime.

It is not a weakly prime, because it can be changed into another prime (51436454431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25718227200 + 25718227201.

It is an arithmetic number, because the mean of its divisors is an integer number (25718227201).

Almost surely, 2^51436454401 is an apocalyptic number.

It is an amenable number.

51436454401 is a deficient number, since it is larger than the sum of its proper divisors (1).

51436454401 is an equidigital number, since it uses as much as digits as its factorization.

51436454401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 51436454401 in words is "fifty-one billion, four hundred thirty-six million, four hundred fifty-four thousand, four hundred one".