27631711990 has 32 divisors (see below), whose sum is σ = 49929587136. Its totient is φ = 11009955840.

The previous prime is 27631711883. The next prime is 27631712023. The reversal of 27631711990 is 9911713672.

It is a self number, because there is not a number n which added to its sum of digits gives 27631711990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9084870 + ... + 9087910.

It is an arithmetic number, because the mean of its divisors is an integer number (1560299598).

Almost surely, 2^27631711990 is an apocalyptic number.

27631711990 is a deficient number, since it is larger than the sum of its proper divisors (22297875146).

27631711990 is a wasteful number, since it uses less digits than its factorization.

27631711990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6264.

The product of its (nonzero) digits is 142884, while the sum is 46.

The spelling of 27631711990 in words is "twenty-seven billion, six hundred thirty-one million, seven hundred eleven thousand, nine hundred ninety".