263298045493 has 16 divisors (see below), whose sum is σ = 305128332160. Its totient is φ = 222523739136.

The previous prime is 263298045481. The next prime is 263298045499. The reversal of 263298045493 is 394540892362.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263298045493 is a prime.

It is a super-2 number, since 2×263298045493² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263298045499) 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, 1611973 + ... + 1767781.

It is an arithmetic number, because the mean of its divisors is an integer number (19070520760).

Almost surely, 2^263298045493 is an apocalyptic number.

It is an amenable number.

263298045493 is a deficient number, since it is larger than the sum of its proper divisors (41830286667).

263298045493 is a wasteful number, since it uses less digits than its factorization.

263298045493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159196.

The product of its (nonzero) digits is 11197440, while the sum is 55.

The spelling of 263298045493 in words is "two hundred sixty-three billion, two hundred ninety-eight million, forty-five thousand, four hundred ninety-three".