1407888447457 has 2 divisors, whose sum is σ = 1407888447458. Its totient is φ = 1407888447456.

The previous prime is 1407888447451. The next prime is 1407888447499. The reversal of 1407888447457 is 7547448887041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1405448186256 + 2440261201 = 1185516^2 + 49399^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1407888447457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1407888447392 and 1407888447401.

It is not a weakly prime, because it can be changed into another prime (1407888447451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703944223728 + 703944223729.

It is an arithmetic number, because the mean of its divisors is an integer number (703944223729).

Almost surely, 2^{1407888447457} is an apocalyptic number.

It is an amenable number.

1407888447457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1407888447457 is an equidigital number, since it uses as much as digits as its factorization.

1407888447457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224788480, while the sum is 67.

The spelling of 1407888447457 in words is "one trillion, four hundred seven billion, eight hundred eighty-eight million, four hundred forty-seven thousand, four hundred fifty-seven".