20147547716146 has 16 divisors (see below), whose sum is σ = 30414854885976. Its totient is φ = 10009397857536.

The previous prime is 20147547716137. The next prime is 20147547716189. The reversal of 20147547716146 is 64161774574102.

It can be written as a sum of positive squares in 4 ways, for example, as 18113629632121 + 2033918084025 = 4256011^2 + 1426155^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33477111 + ... + 34073626.

Almost surely, 2^{20147547716146} is an apocalyptic number.

20147547716146 is a deficient number, since it is larger than the sum of its proper divisors (10267307169830).

20147547716146 is a wasteful number, since it uses less digits than its factorization.

20147547716146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67551693.

The product of its (nonzero) digits is 7902720, while the sum is 55.

The spelling of 20147547716146 in words is "twenty trillion, one hundred forty-seven billion, five hundred forty-seven million, seven hundred sixteen thousand, one hundred forty-six".