27749439362 has 18 divisors (see below), whose sum is σ = 42339634857. Its totient is φ = 13640197800.

The previous prime is 27749439307. The next prime is 27749439373. The reversal of 27749439362 is 26393494772.

It can be written as a sum of positive squares in 2 ways, for example, as 18796684201 + 8952755161 = 137101^2 + 94619^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=117791.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27749439298 and 27749439307.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14369537 + ... + 14371467.

Almost surely, 2^27749439362 is an apocalyptic number.

27749439362 is a deficient number, since it is larger than the sum of its proper divisors (14590195495).

27749439362 is an frugal number, since it uses more digits than its factorization.

27749439362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986 (or 1994 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 56.

The spelling of 27749439362 in words is "twenty-seven billion, seven hundred forty-nine million, four hundred thirty-nine thousand, three hundred sixty-two".