1497257664693 has 16 divisors (see below), whose sum is σ = 2310415687680. Its totient is φ = 844745733936.

The previous prime is 1497257664649. The next prime is 1497257664731. The reversal of 1497257664693 is 3964667527941.

It is not a de Polignac number, because 1497257664693 - 2¹² = 1497257660597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1497257664193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451251405 + ... + 451254722.

It is an arithmetic number, because the mean of its divisors is an integer number (144400980480).

Almost surely, 2^{1497257664693} is an apocalyptic number.

It is an amenable number.

1497257664693 is a deficient number, since it is larger than the sum of its proper divisors (813158022987).

1497257664693 is an equidigital number, since it uses as much as digits as its factorization.

1497257664693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902506216.

The product of its digits is 411505920, while the sum is 69.

The spelling of 1497257664693 in words is "one trillion, four hundred ninety-seven billion, two hundred fifty-seven million, six hundred sixty-four thousand, six hundred ninety-three".