20238666351376 has 40 divisors (see below), whose sum is σ = 42778028218464. Its totient is φ = 9199211631360.

The previous prime is 20238666351347. The next prime is 20238666351377. The reversal of 20238666351376 is 67315366683202.

It is a self number, because there is not a number n which added to its sum of digits gives 20238666351376.

It is not an unprimeable number, because it can be changed into a prime (20238666351377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7981755 + ... + 10207141.

Almost surely, 2^{20238666351376} is an apocalyptic number.

It is an amenable number.

20238666351376 is an abundant number, since it is smaller than the sum of its proper divisors (22539361867088).

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

20238666351376 is a wasteful number, since it uses less digits than its factorization.

20238666351376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277079 (or 2277073 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 58.

The spelling of 20238666351376 in words is "twenty trillion, two hundred thirty-eight billion, six hundred sixty-six million, three hundred fifty-one thousand, three hundred seventy-six".