27798429709 has 8 divisors (see below), whose sum is σ = 29099312640. Its totient is φ = 26522806800.

The previous prime is 27798429649. The next prime is 27798429797. The reversal of 27798429709 is 90792489772.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27798429709 - 2²³ = 27790041101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27798439709) 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, 6312754 + ... + 6317155.

It is an arithmetic number, because the mean of its divisors is an integer number (3637414080).

Almost surely, 2^27798429709 is an apocalyptic number.

It is an amenable number.

27798429709 is a deficient number, since it is larger than the sum of its proper divisors (1300882931).

27798429709 is a wasteful number, since it uses less digits than its factorization.

27798429709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12630011.

The product of its (nonzero) digits is 32006016, while the sum is 64.

The spelling of 27798429709 in words is "twenty-seven billion, seven hundred ninety-eight million, four hundred twenty-nine thousand, seven hundred nine".