2663403231657 has 16 divisors (see below), whose sum is σ = 4141346134400. Its totient is φ = 1521944703216.

The previous prime is 2663403231647. The next prime is 2663403231659. The reversal of 2663403231657 is 7561323043662.

It is not a de Polignac number, because 2663403231657 - 2¹⁶ = 2663403166121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2663403231659) 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, 1294169638 + ... + 1294171695.

It is an arithmetic number, because the mean of its divisors is an integer number (258834133400).

Almost surely, 2^{2663403231657} is an apocalyptic number.

It is an amenable number.

2663403231657 is a deficient number, since it is larger than the sum of its proper divisors (1477942902743).

2663403231657 is an equidigital number, since it uses as much as digits as its factorization.

2663403231657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588341357 (or 2588341343 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 48.

The spelling of 2663403231657 in words is "two trillion, six hundred sixty-three billion, four hundred three million, two hundred thirty-one thousand, six hundred fifty-seven".