27940859517 has 16 divisors (see below), whose sum is σ = 38880869760. Its totient is φ = 17814320832.

The previous prime is 27940859491. The next prime is 27940859521. The reversal of 27940859517 is 71595804972.

It is not a de Polignac number, because 27940859517 - 2³⁴ = 10760990333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27940859587) 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, 415063 + ... + 477659.

It is an arithmetic number, because the mean of its divisors is an integer number (2430054360).

Almost surely, 2^27940859517 is an apocalyptic number.

It is an amenable number.

27940859517 is a deficient number, since it is larger than the sum of its proper divisors (10940010243).

27940859517 is a wasteful number, since it uses less digits than its factorization.

27940859517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69092.

The product of its (nonzero) digits is 6350400, while the sum is 57.

The spelling of 27940859517 in words is "twenty-seven billion, nine hundred forty million, eight hundred fifty-nine thousand, five hundred seventeen".