20673478662 has 16 divisors (see below), whose sum is σ = 41773215792. Its totient is φ = 6820116480.

The previous prime is 20673478627. The next prime is 20673478691. The reversal of 20673478662 is 26687437602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17760139 + ... + 17761302.

It is an arithmetic number, because the mean of its divisors is an integer number (2610825987).

Almost surely, 2^20673478662 is an apocalyptic number.

20673478662 is an abundant number, since it is smaller than the sum of its proper divisors (21099737130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20673478662 is a wasteful number, since it uses less digits than its factorization.

20673478662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35521543.

The product of its (nonzero) digits is 4064256, while the sum is 51.

The spelling of 20673478662 in words is "twenty billion, six hundred seventy-three million, four hundred seventy-eight thousand, six hundred sixty-two".