10001555101501 has 2 divisors, whose sum is σ = 10001555101502. Its totient is φ = 10001555101500.

The previous prime is 10001555101487. The next prime is 10001555101523. The reversal of 10001555101501 is 10510155510001.

10001555101501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8694088633476 + 1307466468025 = 2948574^2 + 1143445^2 .

It is a cyclic number.

It is not a de Polignac number, because 10001555101501 - 2³⁵ = 9967195363133 is a prime.

It is a super-2 number, since 2×10001555101501² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10001555111501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000777550750 + 5000777550751.

It is an arithmetic number, because the mean of its divisors is an integer number (5000777550751).

Almost surely, 2^{10001555101501} is an apocalyptic number.

It is an amenable number.

10001555101501 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001555101501 is an equidigital number, since it uses as much as digits as its factorization.

10001555101501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 625, while the sum is 25.

The spelling of 10001555101501 in words is "ten trillion, one billion, five hundred fifty-five million, one hundred one thousand, five hundred one".