1478137049657 has 2 divisors, whose sum is σ = 1478137049658. Its totient is φ = 1478137049656.

The previous prime is 1478137049633. The next prime is 1478137049687. The reversal of 1478137049657 is 7569407318741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1459696496041 + 18440553616 = 1208179^2 + 135796^2 .

It is a cyclic number.

It is not a de Polignac number, because 1478137049657 - 2⁸ = 1478137049401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1478137049657.

It is not a weakly prime, because it can be changed into another prime (1478137049687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739068524828 + 739068524829.

It is an arithmetic number, because the mean of its divisors is an integer number (739068524829).

Almost surely, 2^{1478137049657} is an apocalyptic number.

It is an amenable number.

1478137049657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1478137049657 is an equidigital number, since it uses as much as digits as its factorization.

1478137049657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35562240, while the sum is 62.

The spelling of 1478137049657 in words is "one trillion, four hundred seventy-eight billion, one hundred thirty-seven million, forty-nine thousand, six hundred fifty-seven".