27786923494 has 16 divisors (see below), whose sum is σ = 45474780240. Its totient is φ = 12628956160.

The previous prime is 27786923477. The next prime is 27786923497. The reversal of 27786923494 is 49432968772.

It is a happy number.

It is a super-2 number, since 2×27786923494² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27786923497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134022 + ... + 271174.

It is an arithmetic number, because the mean of its divisors is an integer number (2842173765).

Almost surely, 2^27786923494 is an apocalyptic number.

27786923494 is a deficient number, since it is larger than the sum of its proper divisors (17687856746).

27786923494 is a wasteful number, since it uses less digits than its factorization.

27786923494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146375.

The product of its digits is 36578304, while the sum is 61.

The spelling of 27786923494 in words is "twenty-seven billion, seven hundred eighty-six million, nine hundred twenty-three thousand, four hundred ninety-four".