115571441761 has 2 divisors, whose sum is σ = 115571441762. Its totient is φ = 115571441760.

The previous prime is 115571441753. The next prime is 115571441771. The reversal of 115571441761 is 167144175511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112000662225 + 3570779536 = 334665^2 + 59756^2 .

It is a cyclic number.

It is not a de Polignac number, because 115571441761 - 2³ = 115571441753 is a prime.

It is a super-2 number, since 2×115571441761² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (115571441731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57785720880 + 57785720881.

It is an arithmetic number, because the mean of its divisors is an integer number (57785720881).

Almost surely, 2^115571441761 is an apocalyptic number.

It is an amenable number.

115571441761 is a deficient number, since it is larger than the sum of its proper divisors (1).

115571441761 is an equidigital number, since it uses as much as digits as its factorization.

115571441761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 43.

The spelling of 115571441761 in words is "one hundred fifteen billion, five hundred seventy-one million, four hundred forty-one thousand, seven hundred sixty-one".