111535986901 has 2 divisors, whose sum is σ = 111535986902. Its totient is φ = 111535986900.

The previous prime is 111535986871. The next prime is 111535986967. The reversal of 111535986901 is 109689535111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99430486276 + 12105500625 = 315326^2 + 110025^2 .

It is a cyclic number.

It is not a de Polignac number, because 111535986901 - 2²³ = 111527598293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111535986971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55767993450 + 55767993451.

It is an arithmetic number, because the mean of its divisors is an integer number (55767993451).

Almost surely, 2^111535986901 is an apocalyptic number.

It is an amenable number.

111535986901 is a deficient number, since it is larger than the sum of its proper divisors (1).

111535986901 is an equidigital number, since it uses as much as digits as its factorization.

111535986901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 49.

The spelling of 111535986901 in words is "one hundred eleven billion, five hundred thirty-five million, nine hundred eighty-six thousand, nine hundred one".