63078856457 has 2 divisors, whose sum is σ = 63078856458. Its totient is φ = 63078856456.

The previous prime is 63078856367. The next prime is 63078856487. The reversal of 63078856457 is 75465887036.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42341704441 + 20737152016 = 205771^2 + 144004^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63078856457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63078856396 and 63078856405.

It is not a weakly prime, because it can be changed into another prime (63078856487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31539428228 + 31539428229.

It is an arithmetic number, because the mean of its divisors is an integer number (31539428229).

Almost surely, 2^63078856457 is an apocalyptic number.

It is an amenable number.

63078856457 is a deficient number, since it is larger than the sum of its proper divisors (1).

63078856457 is an equidigital number, since it uses as much as digits as its factorization.

63078856457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33868800, while the sum is 59.

The spelling of 63078856457 in words is "sixty-three billion, seventy-eight million, eight hundred fifty-six thousand, four hundred fifty-seven".