20146261642 has 16 divisors (see below), whose sum is σ = 32598316800. Its totient is φ = 9282744432.

The previous prime is 20146261631. The next prime is 20146261657. The reversal of 20146261642 is 24616264102.

It is a junction number, because it is equal to n+sod(n) for n = 20146261598 and 20146261607.

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, 631218 + ... + 662365.

It is an arithmetic number, because the mean of its divisors is an integer number (2037394800).

Almost surely, 2^20146261642 is an apocalyptic number.

20146261642 is a deficient number, since it is larger than the sum of its proper divisors (12452055158).

20146261642 is a wasteful number, since it uses less digits than its factorization.

20146261642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294197.

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 20146261642 in words is "twenty billion, one hundred forty-six million, two hundred sixty-one thousand, six hundred forty-two".