27201996774 has 64 divisors (see below), whose sum is σ = 62494471680. Its totient is φ = 8763746400.

The previous prime is 27201996763. The next prime is 27201996791. The reversal of 27201996774 is 47769910272.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 27201996774.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256617 + ... + 346779.

It is an arithmetic number, because the mean of its divisors is an integer number (976476120).

Almost surely, 2^27201996774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27201996774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31247235840).

27201996774 is an abundant number, since it is smaller than the sum of its proper divisors (35292474906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27201996774 is a wasteful number, since it uses less digits than its factorization.

27201996774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90362 (or 90356 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 54.

The spelling of 27201996774 in words is "twenty-seven billion, two hundred one million, nine hundred ninety-six thousand, seven hundred seventy-four".