27121767770 has 16 divisors (see below), whose sum is σ = 48826598688. Its totient is φ = 10847058960.

The previous prime is 27121767767. The next prime is 27121767791. The reversal of 27121767770 is 7776712172.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135764 + ... + 269583.

It is an arithmetic number, because the mean of its divisors is an integer number (3051662418).

Almost surely, 2^27121767770 is an apocalyptic number.

27121767770 is a deficient number, since it is larger than the sum of its proper divisors (21704830918).

27121767770 is a wasteful number, since it uses less digits than its factorization.

27121767770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412045.

The product of its (nonzero) digits is 403368, while the sum is 47.

The spelling of 27121767770 in words is "twenty-seven billion, one hundred twenty-one million, seven hundred sixty-seven thousand, seven hundred seventy".