27951034020 has 192 divisors, whose sum is σ = 96676532736. Its totient is φ = 5875752960.

The previous prime is 27951033991. The next prime is 27951034051. The reversal of 27951034020 is 2043015972.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1503180 + ... + 1521660.

It is an arithmetic number, because the mean of its divisors is an integer number (503523608).

Almost surely, 2^27951034020 is an apocalyptic number.

27951034020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27951034020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48338266368).

27951034020 is an abundant number, since it is smaller than the sum of its proper divisors (68725498716).

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

27951034020 is a wasteful number, since it uses less digits than its factorization.

27951034020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18790 (or 18788 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

Adding to 27951034020 its reverse (2043015972), we get a palindrome (29994049992).

The spelling of 27951034020 in words is "twenty-seven billion, nine hundred fifty-one million, thirty-four thousand, twenty".