101267561149 has 2 divisors, whose sum is σ = 101267561150. Its totient is φ = 101267561148.

The previous prime is 101267561111. The next prime is 101267561207. The reversal of 101267561149 is 941165762101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80262856249 + 21004704900 = 283307^2 + 144930^2 .

It is a cyclic number.

It is not a de Polignac number, because 101267561149 - 2¹³ = 101267552957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101267561249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50633780574 + 50633780575.

It is an arithmetic number, because the mean of its divisors is an integer number (50633780575).

Almost surely, 2^101267561149 is an apocalyptic number.

It is an amenable number.

101267561149 is a deficient number, since it is larger than the sum of its proper divisors (1).

101267561149 is an equidigital number, since it uses as much as digits as its factorization.

101267561149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 43.

The spelling of 101267561149 in words is "one hundred one billion, two hundred sixty-seven million, five hundred sixty-one thousand, one hundred forty-nine".