308891139900 has 144 divisors (see below), whose sum is σ = 1029443444736. Its totient is φ = 70047694080.

The previous prime is 308891139899. The next prime is 308891139929. The reversal of 308891139900 is 9931198803.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 312399 + ... + 845798.

Almost surely, 2^308891139900 is an apocalyptic number.

308891139900 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

308891139900 is an abundant number, since it is smaller than the sum of its proper divisors (720552304836).

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

308891139900 is a wasteful number, since it uses less digits than its factorization.

308891139900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158348 (or 1158341 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 51.

The spelling of 308891139900 in words is "three hundred eight billion, eight hundred ninety-one million, one hundred thirty-nine thousand, nine hundred".