51447567701 has 2 divisors, whose sum is σ = 51447567702. Its totient is φ = 51447567700.

The previous prime is 51447567631. The next prime is 51447567767. The reversal of 51447567701 is 10776574415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40290927076 + 11156640625 = 200726^2 + 105625^2 .

It is a cyclic number.

It is not a de Polignac number, because 51447567701 - 2³⁰ = 50373825877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51447567781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25723783850 + 25723783851.

It is an arithmetic number, because the mean of its divisors is an integer number (25723783851).

Almost surely, 2^51447567701 is an apocalyptic number.

It is an amenable number.

51447567701 is a deficient number, since it is larger than the sum of its proper divisors (1).

51447567701 is an equidigital number, since it uses as much as digits as its factorization.

51447567701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 823200, while the sum is 47.

The spelling of 51447567701 in words is "fifty-one billion, four hundred forty-seven million, five hundred sixty-seven thousand, seven hundred one".