223378181257 has 24 divisors (see below), whose sum is σ = 287463235392. Its totient is φ = 171609328800.

The previous prime is 223378181233. The next prime is 223378181263. The reversal of 223378181257 is 752181873322.

It is not a de Polignac number, because 223378181257 - 2¹¹ = 223378179209 is a prime.

It is a super-2 number, since 2×223378181257² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223378181257.

It is not an unprimeable number, because it can be changed into a prime (223378182257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2880258 + ... + 2956795.

It is an arithmetic number, because the mean of its divisors is an integer number (11977634808).

Almost surely, 2^223378181257 is an apocalyptic number.

It is an amenable number.

223378181257 is a deficient number, since it is larger than the sum of its proper divisors (64085054135).

223378181257 is a wasteful number, since it uses less digits than its factorization.

223378181257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5837149 (or 5837142 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 49.

The spelling of 223378181257 in words is "two hundred twenty-three billion, three hundred seventy-eight million, one hundred eighty-one thousand, two hundred fifty-seven".