20351654645066 has 32 divisors (see below), whose sum is σ = 31084513713792. Its totient is φ = 9990772839360.

The previous prime is 20351654645027. The next prime is 20351654645131. The reversal of 20351654645066 is 66054645615302.

It is a junction number, because it is equal to n+sod(n) for n = 20351654644999 and 20351654645017.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173698595 + ... + 173815721.

It is an arithmetic number, because the mean of its divisors is an integer number (971391053556).

Almost surely, 2^{20351654645066} is an apocalyptic number.

20351654645066 is a deficient number, since it is larger than the sum of its proper divisors (10732859068726).

20351654645066 is a wasteful number, since it uses less digits than its factorization.

20351654645066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119774.

The product of its (nonzero) digits is 15552000, while the sum is 53.

The spelling of 20351654645066 in words is "twenty trillion, three hundred fifty-one billion, six hundred fifty-four million, six hundred forty-five thousand, sixty-six".