20363745123 has 12 divisors (see below), whose sum is σ = 29463908760. Its totient is φ = 13552933056.

The previous prime is 20363745119. The next prime is 20363745187. The reversal of 20363745123 is 32154736302.

20363745123 is a `hidden beast` number, since 2 + 0 + 3 + 637 + 4 + 5 + 12 + 3 = 666.

It is not a de Polignac number, because 20363745123 - 2² = 20363745119 is a prime.

It is a super-3 number, since 3×20363745123³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20363745323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1902453 + ... + 1913126.

It is an arithmetic number, because the mean of its divisors is an integer number (2455325730).

Almost surely, 2^20363745123 is an apocalyptic number.

20363745123 is a deficient number, since it is larger than the sum of its proper divisors (9100163637).

20363745123 is a wasteful number, since it uses less digits than its factorization.

20363745123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3816178 (or 3816175 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 36.

The spelling of 20363745123 in words is "twenty billion, three hundred sixty-three million, seven hundred forty-five thousand, one hundred twenty-three".