101897750487309 has 16 divisors (see below), whose sum is σ = 155277832765440. Its totient is φ = 58225384698480.

The previous prime is 101897750487151. The next prime is 101897750487383. The reversal of 101897750487309 is 903784057798101.

It is not a de Polignac number, because 101897750487309 - 2⁸ = 101897750487053 is a prime.

It is a super-2 number, since 2×101897750487309² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101897750487109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78562029 + ... + 79848530.

It is an arithmetic number, because the mean of its divisors is an integer number (9704864547840).

Almost surely, 2^{101897750487309} is an apocalyptic number.

It is an amenable number.

101897750487309 is a deficient number, since it is larger than the sum of its proper divisors (53380082278131).

101897750487309 is a wasteful number, since it uses less digits than its factorization.

101897750487309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158441200.

The product of its (nonzero) digits is 106686720, while the sum is 69.

The spelling of 101897750487309 in words is "one hundred one trillion, eight hundred ninety-seven billion, seven hundred fifty million, four hundred eighty-seven thousand, three hundred nine".