27770146837 has 8 divisors (see below), whose sum is σ = 28057461120. Its totient is φ = 27484259040.

The previous prime is 27770146823. The next prime is 27770146909. The reversal of 27770146837 is 73864107772.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27770146837 - 2³¹ = 25622663189 is a prime.

It is a super-2 number, since 2×27770146837² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27770146637) 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, 317464 + ... + 395377.

It is an arithmetic number, because the mean of its divisors is an integer number (3507182640).

Almost surely, 2^27770146837 is an apocalyptic number.

It is an amenable number.

27770146837 is a deficient number, since it is larger than the sum of its proper divisors (287314283).

27770146837 is a wasteful number, since it uses less digits than its factorization.

27770146837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713243.

The product of its (nonzero) digits is 2765952, while the sum is 52.

The spelling of 27770146837 in words is "twenty-seven billion, seven hundred seventy million, one hundred forty-six thousand, eight hundred thirty-seven".