15151122661 has 4 divisors (see below), whose sum is σ = 15190682112. Its totient is φ = 15111563212.

The previous prime is 15151122647. The next prime is 15151122697. The reversal of 15151122661 is 16622115151.

15151122661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 15151122661 - 2⁵ = 15151122629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15151122631) 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 3 ways as a sum of consecutive naturals, for example, 19779151 + ... + 19779916.

It is an arithmetic number, because the mean of its divisors is an integer number (3797670528).

Almost surely, 2^15151122661 is an apocalyptic number.

It is an amenable number.

15151122661 is a deficient number, since it is larger than the sum of its proper divisors (39559451).

15151122661 is an equidigital number, since it uses as much as digits as its factorization.

15151122661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39559450.

The product of its digits is 3600, while the sum is 31.

The spelling of 15151122661 in words is "fifteen billion, one hundred fifty-one million, one hundred twenty-two thousand, six hundred sixty-one".