15505001061 has 16 divisors (see below), whose sum is σ = 23330410560. Its totient is φ = 9072936320.

The previous prime is 15505001059. The next prime is 15505001089. The reversal of 15505001061 is 16010050551.

15505001061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 15505001061 - 2¹ = 15505001059 is a prime.

It is a super-2 number, since 2×15505001061² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15505001461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8099880 + ... + 8101793.

It is an arithmetic number, because the mean of its divisors is an integer number (1458150660).

Almost surely, 2^15505001061 is an apocalyptic number.

15505001061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15505001061 is a deficient number, since it is larger than the sum of its proper divisors (7825409499).

15505001061 is a wasteful number, since it uses less digits than its factorization.

15505001061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16201716.

The product of its (nonzero) digits is 750, while the sum is 24.

The spelling of 15505001061 in words is "fifteen billion, five hundred five million, one thousand, sixty-one".