100155016016501 has 2 divisors, whose sum is σ = 100155016016502. Its totient is φ = 100155016016500.

The previous prime is 100155016016459. The next prime is 100155016016513. The reversal of 100155016016501 is 105610610551001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92793263321476 + 7361752695025 = 9632926^2 + 2713255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100155016016501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100155016016551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50077508008250 + 50077508008251.

It is an arithmetic number, because the mean of its divisors is an integer number (50077508008251).

Almost surely, 2^{100155016016501} is an apocalyptic number.

It is an amenable number.

100155016016501 is a deficient number, since it is larger than the sum of its proper divisors (1).

100155016016501 is an equidigital number, since it uses as much as digits as its factorization.

100155016016501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 32.

Adding to 100155016016501 its reverse (105610610551001), we get a palindrome (205765626567502).

The spelling of 100155016016501 in words is "one hundred trillion, one hundred fifty-five billion, sixteen million, sixteen thousand, five hundred one".