51135453077 has 2 divisors, whose sum is σ = 51135453078. Its totient is φ = 51135453076.

The previous prime is 51135453067. The next prime is 51135453119. The reversal of 51135453077 is 77035453115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30837467236 + 20297985841 = 175606^2 + 142471^2 .

It is a cyclic number.

It is not a de Polignac number, because 51135453077 - 2¹² = 51135448981 is a prime.

It is a super-2 number, since 2×51135453077² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51135453067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25567726538 + 25567726539.

It is an arithmetic number, because the mean of its divisors is an integer number (25567726539).

Almost surely, 2^51135453077 is an apocalyptic number.

It is an amenable number.

51135453077 is a deficient number, since it is larger than the sum of its proper divisors (1).

51135453077 is an equidigital number, since it uses as much as digits as its factorization.

51135453077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 220500, while the sum is 41.

The spelling of 51135453077 in words is "fifty-one billion, one hundred thirty-five million, four hundred fifty-three thousand, seventy-seven".