27720180334 has 24 divisors (see below), whose sum is σ = 52766059608. Its totient is φ = 10800069840.

The previous prime is 27720180287. The next prime is 27720180347. The reversal of 27720180334 is 43308102772.

It is a junction number, because it is equal to n+sod(n) for n = 27720180293 and 27720180302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12856149 + ... + 12858304.

It is an arithmetic number, because the mean of its divisors is an integer number (2198585817).

Almost surely, 2^27720180334 is an apocalyptic number.

27720180334 is a deficient number, since it is larger than the sum of its proper divisors (25045879274).

27720180334 is a wasteful number, since it uses less digits than its factorization.

27720180334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25714480 (or 25714473 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The spelling of 27720180334 in words is "twenty-seven billion, seven hundred twenty million, one hundred eighty thousand, three hundred thirty-four".