27777675486 has 96 divisors (see below), whose sum is σ = 62143490304. Its totient is φ = 8269676800.

The previous prime is 27777675473. The next prime is 27777675517. The reversal of 27777675486 is 68457677772.

It is a super-4 number, since 4×27777675486⁴ (a number of 43 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17885686 + ... + 17887238.

It is an arithmetic number, because the mean of its divisors is an integer number (647328024).

Almost surely, 2^27777675486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27777675486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31071745152).

27777675486 is an abundant number, since it is smaller than the sum of its proper divisors (34365814818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27777675486 is a wasteful number, since it uses less digits than its factorization.

27777675486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998 (or 1987 counting only the distinct ones).

The product of its digits is 193616640, while the sum is 66.

The spelling of 27777675486 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred seventy-five thousand, four hundred eighty-six".