98126721861 has 16 divisors (see below), whose sum is σ = 150146882688. Its totient is φ = 55839744000.

The previous prime is 98126721817. The next prime is 98126721877. The reversal of 98126721861 is 16812762189.

It is a de Polignac number, because none of the positive numbers 2^k-98126721861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98126721811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9689340 + ... + 9699461.

It is an arithmetic number, because the mean of its divisors is an integer number (9384180168).

Almost surely, 2^98126721861 is an apocalyptic number.

It is an amenable number.

98126721861 is a deficient number, since it is larger than the sum of its proper divisors (52020160827).

98126721861 is a wasteful number, since it uses less digits than its factorization.

98126721861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19389052.

The product of its digits is 580608, while the sum is 51.

The spelling of 98126721861 in words is "ninety-eight billion, one hundred twenty-six million, seven hundred twenty-one thousand, eight hundred sixty-one".