27099438729 has 16 divisors (see below), whose sum is σ = 39823734720. Its totient is φ = 16254581760.

The previous prime is 27099438719. The next prime is 27099438767. The reversal of 27099438729 is 92783499072.

It is not a de Polignac number, because 27099438729 - 2⁵ = 27099438697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27099438719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4229764 + ... + 4236165.

It is an arithmetic number, because the mean of its divisors is an integer number (2488983420).

Almost surely, 2^27099438729 is an apocalyptic number.

It is an amenable number.

27099438729 is a deficient number, since it is larger than the sum of its proper divisors (12724295991).

27099438729 is a wasteful number, since it uses less digits than its factorization.

27099438729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8466040.

The product of its (nonzero) digits is 13716864, while the sum is 60.

The spelling of 27099438729 in words is "twenty-seven billion, ninety-nine million, four hundred thirty-eight thousand, seven hundred twenty-nine".