27696291840 has 336 divisors, whose sum is σ = 109733596128. Its totient is φ = 6329991168.

The previous prime is 27696291827. The next prime is 27696291859. The reversal of 27696291840 is 4819269672.

27696291840 is a `hidden beast` number, since 2 + 7 + 6 + 9 + 629 + 1 + 8 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2575114 + ... + 2585846.

Almost surely, 2^27696291840 is an apocalyptic number.

27696291840 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 27696291840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54866798064).

27696291840 is an abundant number, since it is smaller than the sum of its proper divisors (82037304288).

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

27696291840 is a wasteful number, since it uses less digits than its factorization.

27696291840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10777 (or 10750 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 27696291840 in words is "twenty-seven billion, six hundred ninety-six million, two hundred ninety-one thousand, eight hundred forty".