27790659964 has 12 divisors (see below), whose sum is σ = 48636315000. Its totient is φ = 13894569968.

The previous prime is 27790659959. The next prime is 27790659983. The reversal of 27790659964 is 46995609772.

It is a junction number, because it is equal to n+sod(n) for n = 27790659896 and 27790659905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103339 + ... + 257410.

It is an arithmetic number, because the mean of its divisors is an integer number (4053026250).

Almost surely, 2^27790659964 is an apocalyptic number.

It is an amenable number.

27790659964 is a deficient number, since it is larger than the sum of its proper divisors (20845655036).

27790659964 is a wasteful number, since it uses less digits than its factorization.

27790659964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380012 (or 380010 counting only the distinct ones).

The product of its (nonzero) digits is 51438240, while the sum is 64.

The spelling of 27790659964 in words is "twenty-seven billion, seven hundred ninety million, six hundred fifty-nine thousand, nine hundred sixty-four".