27791397910 has 8 divisors (see below), whose sum is σ = 50024516256. Its totient is φ = 11116559160.

The previous prime is 27791397899. The next prime is 27791397919. The reversal of 27791397910 is 1979319772.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27791397919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1389569886 + ... + 1389569905.

It is an arithmetic number, because the mean of its divisors is an integer number (6253064532).

Almost surely, 2^27791397910 is an apocalyptic number.

27791397910 is a deficient number, since it is larger than the sum of its proper divisors (22233118346).

27791397910 is a wasteful number, since it uses less digits than its factorization.

27791397910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779139798.

The product of its (nonzero) digits is 1500282, while the sum is 55.

The spelling of 27791397910 in words is "twenty-seven billion, seven hundred ninety-one million, three hundred ninety-seven thousand, nine hundred ten".