100998517601 has 4 divisors (see below), whose sum is σ = 102382059012. Its totient is φ = 99614976192.

The previous prime is 100998517597. The next prime is 100998517663. The reversal of 100998517601 is 106715899001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49551205201 + 51447312400 = 222601^2 + 226820^2 .

It is a cyclic number.

It is not a de Polignac number, because 100998517601 - 2² = 100998517597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100998517201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691770596 + ... + 691770741.

It is an arithmetic number, because the mean of its divisors is an integer number (25595514753).

Almost surely, 2^100998517601 is an apocalyptic number.

It is an amenable number.

100998517601 is a deficient number, since it is larger than the sum of its proper divisors (1383541411).

100998517601 is an equidigital number, since it uses as much as digits as its factorization.

100998517601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383541410.

The product of its (nonzero) digits is 136080, while the sum is 47.

The spelling of 100998517601 in words is "one hundred billion, nine hundred ninety-eight million, five hundred seventeen thousand, six hundred one".