27201530061 has 6 divisors (see below), whose sum is σ = 39291098990. Its totient is φ = 18134353368.

The previous prime is 27201530047. The next prime is 27201530087. The reversal of 27201530061 is 16003510272.

It is a happy number.

27201530061 is a `hidden beast` number, since 2 + 72 + 0 + 1 + 530 + 0 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17031816036 + 10169714025 = 130506^2 + 100845^2 .

It is not a de Polignac number, because 27201530061 - 2⁵ = 27201530029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27201531061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1511196106 + ... + 1511196123.

Almost surely, 2^27201530061 is an apocalyptic number.

It is an amenable number.

27201530061 is a deficient number, since it is larger than the sum of its proper divisors (12089568929).

27201530061 is a wasteful number, since it uses less digits than its factorization.

27201530061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3022392235 (or 3022392232 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The spelling of 27201530061 in words is "twenty-seven billion, two hundred one million, five hundred thirty thousand, sixty-one".