27072021646 has 16 divisors (see below), whose sum is σ = 40677557760. Its totient is φ = 13512857400.

The previous prime is 27072021643. The next prime is 27072021653. The reversal of 27072021646 is 64612027072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27072021643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3289725 + ... + 3297943.

It is an arithmetic number, because the mean of its divisors is an integer number (2542347360).

Almost surely, 2^27072021646 is an apocalyptic number.

27072021646 is a deficient number, since it is larger than the sum of its proper divisors (13605536114).

27072021646 is a wasteful number, since it uses less digits than its factorization.

27072021646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10839.

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

The spelling of 27072021646 in words is "twenty-seven billion, seventy-two million, twenty-one thousand, six hundred forty-six".