27756137201 has 32 divisors (see below), whose sum is σ = 31913481600. Its totient is φ = 23913630720.

The previous prime is 27756137141. The next prime is 27756137203. The reversal of 27756137201 is 10273165772.

It is a de Polignac number, because none of the positive numbers 2^k-27756137201 is a prime.

It is a super-2 number, since 2×27756137201² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27756137203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19422755 + ... + 19424183.

It is an arithmetic number, because the mean of its divisors is an integer number (997296300).

Almost surely, 2^27756137201 is an apocalyptic number.

It is an amenable number.

27756137201 is a deficient number, since it is larger than the sum of its proper divisors (4157344399).

27756137201 is a wasteful number, since it uses less digits than its factorization.

27756137201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129.

The product of its (nonzero) digits is 123480, while the sum is 41.

The spelling of 27756137201 in words is "twenty-seven billion, seven hundred fifty-six million, one hundred thirty-seven thousand, two hundred one".