2373321663 has 6 divisors (see below), whose sum is σ = 3428131304. Its totient is φ = 1582214436.

The previous prime is 2373321641. The next prime is 2373321667. The reversal of 2373321663 is 3661233732.

It is not a de Polignac number, because 2373321663 - 2¹⁸ = 2373059519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2373321667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131851195 + ... + 131851212.

Almost surely, 2^2373321663 is an apocalyptic number.

2373321663 is a deficient number, since it is larger than the sum of its proper divisors (1054809641).

2373321663 is a wasteful number, since it uses less digits than its factorization.

2373321663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263702413 (or 263702410 counting only the distinct ones).

The product of its digits is 81648, while the sum is 36.

The square root of 2373321663 is about 48716.7493065783. The cubic root of 2373321663 is about 1333.8864711985.

The spelling of 2373321663 in words is "two billion, three hundred seventy-three million, three hundred twenty-one thousand, six hundred sixty-three".