223135145540 has 24 divisors (see below), whose sum is σ = 468652430232. Its totient is φ = 89240986880.

The previous prime is 223135145503. The next prime is 223135145557. The reversal of 223135145540 is 45541531322.

It can be written as a sum of positive squares in 4 ways, for example, as 15993649156 + 207141496384 = 126466^2 + 455128^2 .

It is a super-3 number, since 3×223135145540³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223135145540.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 676391 + ... + 950670.

It is an arithmetic number, because the mean of its divisors is an integer number (19527184593).

Almost surely, 2^223135145540 is an apocalyptic number.

223135145540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223135145540 is an abundant number, since it is smaller than the sum of its proper divisors (245517284692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223135145540 is a wasteful number, since it uses less digits than its factorization.

223135145540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633927 (or 1633925 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 223135145540 its reverse (45541531322), we get a palindrome (268676676862).

The spelling of 223135145540 in words is "two hundred twenty-three billion, one hundred thirty-five million, one hundred forty-five thousand, five hundred forty".