27578661052 has 6 divisors (see below), whose sum is σ = 48262656848. Its totient is φ = 13789330524.

The previous prime is 27578661041. The next prime is 27578661053. The reversal of 27578661052 is 25016687572.

It is a happy number.

It is a super-2 number, since 2×27578661052² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27578660987 and 27578661005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27578661053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3447332628 + ... + 3447332635.

Almost surely, 2^27578661052 is an apocalyptic number.

It is an amenable number.

27578661052 is a deficient number, since it is larger than the sum of its proper divisors (20683995796).

27578661052 is a wasteful number, since it uses less digits than its factorization.

27578661052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6894665267 (or 6894665265 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 27578661052 in words is "twenty-seven billion, five hundred seventy-eight million, six hundred sixty-one thousand, fifty-two".