20412552123 has 16 divisors (see below), whose sum is σ = 30268529440. Its totient is φ = 13595897952.

The previous prime is 20412552109. The next prime is 20412552203. The reversal of 20412552123 is 32125521402.

It is not a de Polignac number, because 20412552123 - 2⁵ = 20412552091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20412572123) 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 15 ways as a sum of consecutive naturals, for example, 316336 + ... + 375357.

It is an arithmetic number, because the mean of its divisors is an integer number (1891783090).

Almost surely, 2^20412552123 is an apocalyptic number.

20412552123 is a deficient number, since it is larger than the sum of its proper divisors (9855977317).

20412552123 is a wasteful number, since it uses less digits than its factorization.

20412552123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692795 (or 692789 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 20412552123 in words is "twenty billion, four hundred twelve million, five hundred fifty-two thousand, one hundred twenty-three".