203139861384 has 32 divisors (see below), whose sum is σ = 509451721920. Its totient is φ = 67499678016.

The previous prime is 203139861383. The next prime is 203139861391. The reversal of 203139861384 is 483168931302.

It is a super-2 number, since 2×203139861384² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (203139861383) 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, 13342804 + ... + 13358019.

It is an arithmetic number, because the mean of its divisors is an integer number (15920366310).

Almost surely, 2^203139861384 is an apocalyptic number.

203139861384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

203139861384 is an abundant number, since it is smaller than the sum of its proper divisors (306311860536).

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

203139861384 is a wasteful number, since it uses less digits than its factorization.

203139861384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26701149 (or 26701145 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 203139861384 in words is "two hundred three billion, one hundred thirty-nine million, eight hundred sixty-one thousand, three hundred eighty-four".