20549291146 has 8 divisors (see below), whose sum is σ = 31283995680. Its totient is φ = 10121292588.

The previous prime is 20549291137. The next prime is 20549291177. The reversal of 20549291146 is 64119294502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76676326 + ... + 76676593.

It is an arithmetic number, because the mean of its divisors is an integer number (3910499460).

Almost surely, 2^20549291146 is an apocalyptic number.

20549291146 is a deficient number, since it is larger than the sum of its proper divisors (10734704534).

20549291146 is a wasteful number, since it uses less digits than its factorization.

20549291146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153352988.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 20549291146 in words is "twenty billion, five hundred forty-nine million, two hundred ninety-one thousand, one hundred forty-six".