20203214919918 has 96 divisors (see below), whose sum is σ = 44436861633024. Its totient is φ = 6118426856448.

The previous prime is 20203214919917. The next prime is 20203214919971. The reversal of 20203214919918 is 81991941230202.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203214919917) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4251421 + ... + 7647287.

It is an arithmetic number, because the mean of its divisors is an integer number (462883975344).

Almost surely, 2^{20203214919918} is an apocalyptic number.

20203214919918 is an abundant number, since it is smaller than the sum of its proper divisors (24233646713106).

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

20203214919918 is a wasteful number, since it uses less digits than its factorization.

20203214919918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396026 (or 3396009 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 51.

The spelling of 20203214919918 in words is "twenty trillion, two hundred three billion, two hundred fourteen million, nine hundred nineteen thousand, nine hundred eighteen".