27439123490 has 16 divisors (see below), whose sum is σ = 49879438200. Its totient is φ = 10866979200.

The previous prime is 27439123469. The next prime is 27439123529. The reversal of 27439123490 is 9432193472.

It can be written as a sum of positive squares in 4 ways, for example, as 26797362601 + 641760889 = 163699^2 + 25333^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13582715 + ... + 13584734.

Almost surely, 2^27439123490 is an apocalyptic number.

27439123490 is a deficient number, since it is larger than the sum of its proper divisors (22440314710).

27439123490 is a wasteful number, since it uses less digits than its factorization.

27439123490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27167557.

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 27439123490 in words is "twenty-seven billion, four hundred thirty-nine million, one hundred twenty-three thousand, four hundred ninety".