20123963458 has 16 divisors (see below), whose sum is σ = 30577113216. Its totient is φ = 9932221440.

The previous prime is 20123963429. The next prime is 20123963521. The reversal of 20123963458 is 85436932102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92991 + ... + 221122.

It is an arithmetic number, because the mean of its divisors is an integer number (1911069576).

Almost surely, 2^20123963458 is an apocalyptic number.

20123963458 is a deficient number, since it is larger than the sum of its proper divisors (10453149758).

20123963458 is a wasteful number, since it uses less digits than its factorization.

20123963458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314529.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 20123963458 in words is "twenty billion, one hundred twenty-three million, nine hundred sixty-three thousand, four hundred fifty-eight".