15003045661 has 2 divisors, whose sum is σ = 15003045662. Its totient is φ = 15003045660.

The previous prime is 15003045653. The next prime is 15003045667. The reversal of 15003045661 is 16654030051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14959736100 + 43309561 = 122310^2 + 6581^2 .

It is a cyclic number.

It is not a de Polignac number, because 15003045661 - 2³ = 15003045653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15003045667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7501522830 + 7501522831.

It is an arithmetic number, because the mean of its divisors is an integer number (7501522831).

Almost surely, 2^15003045661 is an apocalyptic number.

It is an amenable number.

15003045661 is a deficient number, since it is larger than the sum of its proper divisors (1).

15003045661 is an equidigital number, since it uses as much as digits as its factorization.

15003045661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 15003045661 in words is "fifteen billion, three million, forty-five thousand, six hundred sixty-one".