100115801501 has 4 divisors (see below), whose sum is σ = 102821634012. Its totient is φ = 97409968992.

The previous prime is 100115801477. The next prime is 100115801629. The reversal of 100115801501 is 105108511001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 105108511001 = 13 ⋅8085270077.

It can be written as a sum of positive squares in 2 ways, for example, as 45656578276 + 54459223225 = 213674^2 + 233365^2 .

It is a cyclic number.

It is not a de Polignac number, because 100115801501 - 2⁶ = 100115801437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100115801701) 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, 1352916200 + ... + 1352916273.

It is an arithmetic number, because the mean of its divisors is an integer number (25705408503).

Almost surely, 2^100115801501 is an apocalyptic number.

It is an amenable number.

100115801501 is a deficient number, since it is larger than the sum of its proper divisors (2705832511).

100115801501 is an equidigital number, since it uses as much as digits as its factorization.

100115801501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705832510.

The product of its (nonzero) digits is 200, while the sum is 23.

The spelling of 100115801501 in words is "one hundred billion, one hundred fifteen million, eight hundred one thousand, five hundred one".