15015340061 has 4 divisors (see below), whose sum is σ = 15021448800. Its totient is φ = 15009231324.

The previous prime is 15015340057. The next prime is 15015340091. The reversal of 15015340061 is 16004351051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16004351051 = 13 ⋅1231103927.

It is a cyclic number.

It is not a de Polignac number, because 15015340061 - 2² = 15015340057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15015340061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15015340091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3050681 + ... + 3055598.

It is an arithmetic number, because the mean of its divisors is an integer number (3755362200).

Almost surely, 2^15015340061 is an apocalyptic number.

It is an amenable number.

15015340061 is a deficient number, since it is larger than the sum of its proper divisors (6108739).

15015340061 is an equidigital number, since it uses as much as digits as its factorization.

15015340061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6108738.

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 15015340061 in words is "fifteen billion, fifteen million, three hundred forty thousand, sixty-one".