20187667104388 has 24 divisors (see below), whose sum is σ = 41199320624000. Its totient is φ = 8651857329864.

The previous prime is 20187667104361. The next prime is 20187667104389. The reversal of 20187667104388 is 88340176678102.

It is not an unprimeable number, because it can be changed into a prime (20187667104389) 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, 7357020168 + ... + 7357022911.

Almost surely, 2^{20187667104388} is an apocalyptic number.

20187667104388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20187667104388 is an abundant number, since it is smaller than the sum of its proper divisors (21011653519612).

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

20187667104388 is a wasteful number, since it uses less digits than its factorization.

20187667104388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14714043104 (or 14714043088 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 61.

The spelling of 20187667104388 in words is "twenty trillion, one hundred eighty-seven billion, six hundred sixty-seven million, one hundred four thousand, three hundred eighty-eight".