109794260581 has 2 divisors, whose sum is σ = 109794260582. Its totient is φ = 109794260580.

The previous prime is 109794260557. The next prime is 109794260617. The reversal of 109794260581 is 185062497901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107784173025 + 2010087556 = 328305^2 + 44834^2 .

It is a cyclic number.

It is not a de Polignac number, because 109794260581 - 2¹³ = 109794252389 is a prime.

It is a super-2 number, since 2×109794260581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109794260501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54897130290 + 54897130291.

It is an arithmetic number, because the mean of its divisors is an integer number (54897130291).

Almost surely, 2^109794260581 is an apocalyptic number.

It is an amenable number.

109794260581 is a deficient number, since it is larger than the sum of its proper divisors (1).

109794260581 is an equidigital number, since it uses as much as digits as its factorization.

109794260581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 109794260581 in words is "one hundred nine billion, seven hundred ninety-four million, two hundred sixty thousand, five hundred eighty-one".