1223540733375 has 48 divisors (see below), whose sum is σ = 2226249735840. Its totient is φ = 646456348800.

The previous prime is 1223540733343. The next prime is 1223540733379. The reversal of 1223540733375 is 5733370453221.

1223540733375 is a `hidden beast` number, since 1 + 2 + 2 + 3 + 540 + 7 + 3 + 33 + 75 = 666.

It is not a de Polignac number, because 1223540733375 - 2⁵ = 1223540733343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1223540733375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223540733379) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4961830 + ... + 5202579.

It is an arithmetic number, because the mean of its divisors is an integer number (46380202830).

Almost surely, 2^{1223540733375} is an apocalyptic number.

1223540733375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1223540733375 is a deficient number, since it is larger than the sum of its proper divisors (1002709002465).

1223540733375 is a wasteful number, since it uses less digits than its factorization.

1223540733375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10164537 (or 10164524 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 45.

The spelling of 1223540733375 in words is "one trillion, two hundred twenty-three billion, five hundred forty million, seven hundred thirty-three thousand, three hundred seventy-five".